BlueCrest Capital Management 13F-HR Quarterly holdings report by institutional manager

The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE

OMB APPROVAL

OMB Number:		3235-0006
Expires:	Oct 31, 2018
Estimated average burden
hours per response:		23.8

COLUMN 1	COLUMN 2	COLUMN 3	COLUMN 4	COLUMN 5			COLUMN 6	COLUMN 7	COLUMN 8
			VALUE	SHRS OR	SH/	PUT/	INVESTMENT	OTHER	VOTING AUTHORITY
NAME OF ISSUER	TITLE OF CLASS	CUSIP	(x$1000)	PRN AMT	PRN	CALL	DISCRETION	MANAGER	SOLE	SHARED	NONE
AES CORP	UNIT 02/15/2024	00130H204	13,625	154,178	SH		OTR		0	154,178	0
AFLAC INC	COM	001055102	11,240	200,000	SH	Put	OTR		0	200,000	0
ALCOA CORP	COM	013872106	842	25,000	SH		OTR		0	25,000	0
ALPHABET INC	CAP STK CL A	02079K305	4,891	51,137	SH		OTR		0	51,137	0
ALPHABET INC	CAP STK CL A	02079K305	13,171	137,700	SH	Call	OTR		0	137,700	0
ALTC ACQUISITION CORP	COM CL A	02156V109	10,736	1,100,000	SH		OTR		0	1,100,000	0
ALTIMETER GROWTH CORP 2	COM CL A	G0371B109	2,923	295,000	SH		OTR		0	295,000	0
AMERICAN AIRLINES GROUP INC	NOTE 6.500% 7/0	02376RAF9	14,155	14,000,000	PRN		OTR		0	0	14,000,000
AMERICAN ELEC PWR CO INC	COM	025537101	5,202	60,177	SH		OTR		0	60,177	0
AMERICAN INTL GROUP INC	COM NEW	026874784	9,496	200,000	SH	Put	OTR		0	200,000	0
ANGEL POND HOLDINGS CORP	SHS CL A	G0447J102	7,373	750,000	SH		OTR		0	750,000	0
ANZU SPECIAL ACQUISITIN CORP	*W EXP 01/27/202	03737A119	13	200,000	SH		OTR		0	200,000	0
ANZU SPECIAL ACQUISITIN CORP	COM CL A	03737A101	2,946	300,000	SH		OTR		0	300,000	0
ARGUS CAPITAL CORP	*W EXP 08/31/202	04026L113	32	211,227	SH		OTR		0	211,227	0
ARYA SCIENCES ACQUISITN CORP	CLASS A ORD SHS	G31658100	2,453	250,000	SH		OTR		0	250,000	0
AVALARA INC	COM	05338G106	551	6,000	SH		OTR		0	6,000	0
AVISTA PUB ACQUISITION CORP	*W EXP 04/06/202	G07247128	50	100,000	SH		OTR		0	100,000	0
AVISTA PUB ACQUISITION CORP	CLASS A ORD SHS	G07247102	9,598	940,514	SH		OTR		0	940,514	0
BECTON DICKINSON & CO	COM	075887109	1,667	7,479	SH		OTR		0	7,479	0
BIOMX INC	*W EXP 10/28/202	09090D111	3	80,605	SH		OTR		0	80,605	0
BIOTE CORP	*W EXP 05/26/202	090683111	87	254,745	SH		OTR		0	254,745	0
BOOKING HOLDINGS INC	COM	09857L108	1,147	698	SH		OTR		0	698	0
BOSTON SCIENTIFIC CORP	5.50% CNV PFD A	101137206	1,325	13,090	SH		OTR		0	13,090	0
BROADMARK RLTY CAP INC	*W EXP 11/15/202	11135B118	865	15,147,348	SH		OTR		0	15,147,348	0
BROOGE ENERGY LTD	*W EXP 12/20/202	G1611B115	2,999	11,108,579	SH		OTR		0	11,108,579	0
BROOGE ENERGY LTD	SHS	G1611B107	1,575	202,973	SH		OTR		0	202,973	0
CABLE ONE INC	NOTE 1.125% 3/1	12685JAG0	972	1,352,000	PRN		OTR		0	0	1,352,000
CALIFORNIA RES CORP	COM STOCK	13057Q305	5,042	131,198	SH		OTR		0	131,198	0
CALLON PETE CO DEL	COM	13123X508	3,619	103,378	SH		OTR		0	103,378	0
CARNIVAL CORP	COMMON STOCK	143658300	70	10,000	SH	Put	OTR		0	10,000	0
CBOE GLOBAL MKTS INC	COM	12503M108	3,228	27,500	SH		OTR		0	27,500	0
CC NEUBERGER PRINCIPAL HOLDN	*W EXP 99/99/999	G1992N126	27	150,000	SH		OTR		0	150,000	0
CENTURY ALUM CO	NOTE 2.750% 5/0	156431AQ1	3,449	5,473,000	PRN		OTR		0	0	5,473,000
CHORD ENERGY CORPORATION	COM NEW	674215207	9,670	70,706	SH		OTR		0	70,706	0
CHURCHILL CAPITAL CORP V	*W EXP 10/29/202	17144T115	24	282,435	SH		OTR		0	282,435	0
CHURCHILL CAPITAL CORP VII	*W EXP 02/29/202	17144M110	16	115,000	SH		OTR		0	115,000	0
CLARIVATE PLC	5.25% PFD CONV A	G21810208	3,220	75,509	SH		OTR		0	75,509	0
COHERENT CORP	6% CONV PFD A	19247G206	1,061	6,781	SH		OTR		0	6,781	0
CORSAIR PARTNERING CORP	UNIT 99/99/9999	G2540H124	10,835	1,100,000	SH		OTR		0	1,100,000	0
CRITEO S A	SPONS ADS	226718104	61,088	2,260,000	SH		OTR		0	2,260,000	0
CROWN PROPTECH ACQUISITIONS	SHS CL A	G25741102	8,153	821,912	SH		OTR		0	821,912	0
DANAHER CORPORATION	COM	235851102	16,862	65,284	SH		OTR		0	65,284	0
DIGITAL MEDIA SOLUTIONS INC	*W EXP 07/15/202	25401G114	402	1,501,927	SH		OTR		0	1,501,927	0
DISNEY WALT CO	COM	254687106	924	9,800	SH		OTR		0	9,800	0
DMY TECHNOLOGY GROUP INC VI	*W EXP 99/99/999	233247113	35	72,980	SH		OTR		0	72,980	0
DMY TECHNOLOGY GROUP INC VI	CL A COM	233247105	2,094	210,200	SH		OTR		0	210,200	0
DRAGONEER GROWTH OPT CORP II	CL A SHS	G28315102	7,832	800,000	SH		OTR		0	800,000	0
EARTHSTONE ENERGY INC	CL A	27032D304	2,348	190,575	SH		OTR		0	190,575	0
ELANCO ANIMAL HEALTH INC	UNIT 02/01/2023	28414H202	793	37,935	SH		OTR		0	37,935	0
ENERPLUS CORP	COM	292766102	5,767	406,956	SH		OTR		0	406,956	0
EPR PPTYS	PFD C CV 5.75%	26884U208	567	32,822	SH		OTR		0	32,822	0
ESPERION THERAPEUTICS INC NE	NOTE 4.000%11/1	29664WAB1	2,726	4,850,000	PRN		OTR		0	0	4,850,000
EXACT SCIENCES CORP	NOTE 0.375% 3/0	30063PAC9	1,599	2,500,000	PRN		OTR		0	0	2,500,000
FAST RADIUS INC	*W EXP 02/11/202	31187R118	3	102,352	SH		OTR		0	102,352	0
FIFTH WALL ACQUISITN CORP II	CLASS A ORD SHS	G34142102	5,904	600,000	SH		OTR		0	600,000	0
FINTECH ACQUISITION CORP VI	*W EXP 03/31/202	31811H114	3	62,500	SH		OTR		0	62,500	0
FINTECH ACQUISITION CORP VI	UNIT 06/24/2026	31811H205	8,432	850,000	SH		OTR		0	850,000	0
FOXO TECHNOLOGIES INC	*W EXP 08/01/202	351471115	272	2,715,542	SH		OTR		0	2,715,542	0
FTAC HERA ACQUISITION CORP	*W EXP 02/28/202	G3728Y111	13	150,000	SH		OTR		0	150,000	0
GELESIS HLDGS INC	*W EXP 01/13/202	36850R113	29	575,000	SH		OTR		0	575,000	0
GFL ENVIRONMENTAL INC	UNIT 03/15/2023	36168Q120	22,401	387,562	SH		OTR		0	387,562	0
GLOBAL CORD BLOOD CORPORATIO	SHS	G39342103	2,237	748,889	SH		OTR		0	748,889	0
GLOBAL PARTNER ACQISTN CORP	*W EXP 01/14/202	G3934P128	5	83,334	SH		OTR		0	83,334	0
GOLDEN FALCON ACQUISITION CO	CL A	38102H109	1,144	115,000	SH		OTR		0	115,000	0
GORES HLDGS VIII INC	CL A	382863108	29,610	3,000,000	SH		OTR		0	3,000,000	0
GORES TECHNOLOGY PARTNERS IN	CLASS A COM	382870103	1,056	107,500	SH		OTR		0	107,500	0
GOSSAMER BIO INC	NOTE 5.000% 6/0	38341PAA0	2,072	2,000,000	PRN		OTR		0	0	2,000,000
GROUP NINE ACQUISITION CORP	*W EXP 01/15/202	39947R112	10	166,666	SH		OTR		0	166,666	0
HUMANCO ACQUISITION CORP	*W EXP 99/99/999	44487N117	2	15,470	SH		OTR		0	15,470	0
HUMANCO ACQUISITION CORP	UNIT 12/08/2023	44487N208	4,985	500,000	SH		OTR		0	500,000	0
INFINERA CORP	COM	45667G103	146	30,100	SH	Call	OTR		0	30,100	0
INFINERA CORP	DEBT 3.750% 8/0	45667GAF0	4,059	4,075,000	PRN		OTR		0	0	4,075,000
INNOVATE CORP	NOTE 7.500% 8/0	404139AG2	857	1,333,000	PRN		OTR		0	0	1,333,000
INSIGHT ENTERPRISES INC	NOTE 0.750% 2/1	45765UAB9	23,714	18,505,000	PRN		OTR		0	0	18,505,000
INSU ACQUISITION CORP III	*W EXP 12/31/202	457817112	17	420,289	SH		OTR		0	420,289	0
INTERPRIVATE II ACQUISITION	UNIT 99/99/9999	46064Q207	3,936	400,000	SH		OTR		0	400,000	0
INTERPRIVATE III FINANCIAL P	COM CL A	46064R106	3,916	400,000	SH		OTR		0	400,000	0
INTERPRIVATE IV INFRATECH PR	UNIT 03/05/2026	46064T201	3,924	400,000	SH		OTR		0	400,000	0
INTREPID POTASH INC	COM	46121Y201	1,088	27,500	SH		OTR		0	27,500	0
INVESCO EXCHANGE TRADED FD T	DYNMC ENRG EXP	46137V761	1,781	64,638	SH		OTR		0	64,638	0
INVESCO QQQ TR	UNIT SER 1	46090E103	352,249	1,318,000	SH	Call	OTR		0	1,318,000	0
INVESCO QQQ TR	UNIT SER 1	46090E103	152,739	571,500	SH	Put	OTR		0	571,500	0
INVESCO QQQ TR	UNIT SER 1	46090E103	49,969	186,968	SH		OTR		0	186,968	0
ISHARES INC	MSCI BRAZIL ETF	464286400	13,334	450,000	SH	Put	OTR		0	450,000	0
ISHARES INC	MSCI BRAZIL ETF	464286400	4,445	150,000	SH		OTR		0	150,000	0
ISHARES TR	CHINA LG-CAP ETF	464287184	12,284	475,000	SH	Call	OTR		0	475,000	0
ISHARES TR	FLTG RATE NT ETF	46429B655	6,439	128,091	SH		OTR		0	128,091	0
ISHARES TR	IBOXX HI YD ETF	464288513	48,545	680,000	SH	Put	OTR		0	680,000	0
ISHARES TR	IBOXX HI YD ETF	464288513	8,031	112,500	SH	Call	OTR		0	112,500	0
ISHARES TR	IBOXX HI YD ETF	464288513	5,511	77,200	SH		OTR		0	77,200	0
ISHARES TR	IBOXX INV CP ETF	464287242	8,401	82,000	SH	Put	OTR		0	82,000	0
ISHARES TR	IBOXX INV CP ETF	464287242	102,450	1,000,000	SH	Call	OTR		0	1,000,000	0
ISHARES TR	IBOXX INV CP ETF	464287242	9,522	92,940	SH		OTR		0	92,940	0
ISHARES TR	JPMORGAN USD EMG	464288281	4,764	60,000	SH		OTR		0	60,000	0
ISHARES TR	JPMORGAN USD EMG	464288281	59,550	750,000	SH	Call	OTR		0	750,000	0
ISHARES TR	JPMORGAN USD EMG	464288281	50,816	640,000	SH	Put	OTR		0	640,000	0
ISHARES TR	MSCI EAFE ETF	464287465	1,120	20,000	SH	Call	OTR		0	20,000	0
ISHARES TR	MSCI EAFE ETF	464287465	9,522	170,000	SH	Put	OTR		0	170,000	0
ISHARES TR	MSCI EAFE ETF	464287465	2,862	51,100	SH		OTR		0	51,100	0
ISHARES TR	MSCI EMG MKT ETF	464287234	2,093	60,000	SH	Put	OTR		0	60,000	0
ISHARES TR	MSCI EMG MKT ETF	464287234	2,965	85,000	SH		OTR		0	85,000	0
ISHARES TR	MSCI EMG MKT ETF	464287234	69,760	2,000,000	SH	Call	OTR		0	2,000,000	0
ISHARES TR	MSCI UK ETF NEW	46435G334	524	20,000	SH		OTR		0	20,000	0
ISHARES TR	RUSSELL 2000 ETF	464287655	845	5,124	SH		OTR		0	5,124	0
ISHARES TR	RUSSELL 2000 ETF	464287655	10,852	65,800	SH	Put	OTR		0	65,800	0
ISHARES TR	TIPS BD ETF	464287176	94,410	900,000	SH	Call	OTR		0	900,000	0
JACK CREEK INVESTMENT CORP	CL A SHS	G4989X115	7,463	750,000	SH		OTR		0	750,000	0
KAIROS ACQUISITION CORP	*W EXP 11/30/202	G52110106	9	300,000	SH		OTR		0	300,000	0
KAIROS ACQUISITION CORP	CL A SHS	G52110114	4,876	490,000	SH		OTR		0	490,000	0
KHOSLA VENTURES ACQUISITION	CL A	482504107	2,691	274,600	SH		OTR		0	274,600	0
KHOSLA VENTURES ACQUT CO III	COM CL A	482506102	4,890	500,000	SH		OTR		0	500,000	0
KKR & CO INC	6% MCONV PFD C	48251W401	3,165	58,150	SH		OTR		0	58,150	0
LANNETT CO INC	NOTE 4.500%10/0	51602UAC2	357	2,975,000	PRN		OTR		0	0	2,975,000
LDH GROWTH CORP I	UNIT 03/17/2026	G54094118	1,980	200,000	SH		OTR		0	200,000	0
LEAD EDGE GROWTH OPRTUNTS LT	*W EXP 04/01/202	G54085116	2	37,500	SH		OTR		0	37,500	0
LEO HLDGS CORP II	*W EXP 01/07/202	G5463R128	3	125,000	SH		OTR		0	125,000	0
LOCKHEED MARTIN CORP	COM	539830109	2,897	7,500	SH		OTR		0	7,500	0
MAGNUM OPUS ACQUISITION LTD	SHS CL A	G5S70A104	4,789	482,300	SH		OTR		0	482,300	0
MATADOR RES CO	COM	576485205	9,715	198,582	SH		OTR		0	198,582	0
METLIFE INC	COM	59156R108	18,842	310,000	SH	Put	OTR		0	310,000	0
MFA FINL INC	COM	55272X607	2,680	344,497	SH		OTR		0	344,497	0
MICRON TECHNOLOGY INC	COM	595112103	2,505	50,000	SH	Put	OTR		0	50,000	0
MICROSOFT CORP	COM	594918104	104,805	450,000	SH	Put	OTR		0	450,000	0
MIDDLEBY CORP	NOTE 1.000% 9/0	596278AB7	10,577	9,233,000	PRN		OTR		0	0	9,233,000
MR COOPER GROUP INC	COM	62482R107	16,123	398,103	SH		OTR		0	398,103	0
NEWMONT CORP	COM	651639106	1,369	32,578	SH		OTR		0	32,578	0
NEXTERA ENERGY INC	COM	65339F101	3,136	40,000	SH	Put	OTR		0	40,000	0
NEXTERA ENERGY INC	UNIT 03/01/2023	65339F770	3,228	64,840	SH		OTR		0	64,840	0
NORTH ATLANTIC ACQUISITN COR	*W EXP 10/20/202	G66139125	82	1,445,000	SH		OTR		0	1,445,000	0
NORTH MOUNTAIN MERGER CORP	UNIT 09/16/2025	661204206	11,385	1,138,500	SH		OTR		0	1,138,500	0
NORTHERN OIL AND GAS INC MN	COM	665531307	3,560	129,871	SH		OTR		0	129,871	0
OCCIDENTAL PETE CORP	COM	674599105	6,163	100,300	SH	Call	OTR		0	100,300	0
OCCIDENTAL PETE CORP	COM	674599105	7,685	125,062	SH		OTR		0	125,062	0
ON SEMICONDUCTOR CORP	COM	682189105	1,501	24,080	SH		OTR		0	24,080	0
OVINTIV INC	COM	69047Q102	25,173	547,232	SH		OTR		0	547,232	0
PARAMOUNT GLOBAL	5.75% CONV PFD A	92556H305	355	11,474	SH		OTR		0	11,474	0
PDC ENERGY INC	COM	69327R101	4,236	73,305	SH		OTR		0	73,305	0
PENNYMAC FINL SVCS INC NEW	COM	70932M107	11,452	266,946	SH		OTR		0	266,946	0
PERMIAN RESOURCES CORP	CLASS A COM	71424F105	3,255	478,693	SH		OTR		0	478,693	0
PETROLEO BRASILEIRO SA PETRO	SP ADR NON VTG	71654V101	4,771	430,555	SH		OTR		0	430,555	0
PETROLEO BRASILEIRO SA PETRO	SPONSORED ADR	71654V408	555	45,003	SH		OTR		0	45,003	0
PG&E CORP	UNIT 08/16/2023	69331C140	1,119	9,792	SH		OTR		0	9,792	0
PINE TECHNOLOGY ACQUISITN CO	CLASS A COM	722850104	2,848	290,000	SH		OTR		0	290,000	0
PROPERTY SOLUTIONS ACQUISITI	*W EXP 03/01/202	74350A116	6	101,384	SH		OTR		0	101,384	0
PROSPECTOR CAPITAL CORP	CL A	G7273A105	996	100,000	SH		OTR		0	100,000	0
RANGER OIL CORPORATION	CLASS A COM	70788V102	2,308	73,402	SH		OTR		0	73,402	0
RBC BEARINGS INC	5% CNV PFD SR A	75524B203	3,362	32,327	SH		OTR		0	32,327	0
RENOVACOR INC	*W EXP 99/99/999	75989E114	15	187,048	SH		OTR		0	187,048	0
REVIVA PHARMACEUTCLS HLDGS I	*W EXP 12/25/202	76152G118	239	1,251,250	SH		OTR		0	1,251,250	0
RITHM CAPITAL CORP	COM NEW	64828T201	16,525	2,257,507	SH		OTR		0	2,257,507	0
RXR ACQUISITION CORP	*W EXP 03/08/202	74981W115	5	204,850	SH		OTR		0	204,850	0
RXR ACQUISITION CORP	CLASS A COM	74981W107	2,699	274,250	SH		OTR		0	274,250	0
SABRE CORP	6.50% CONV PFD A	78573M203	3,530	49,459	SH		OTR		0	49,459	0
SANDBRIDGE X2 CORP	*W EXP 03/11/202	799792114	9	217,955	SH		OTR		0	217,955	0
SELECT SECTOR SPDR TR	ENERGY	81369Y506	295,282	4,100,000	SH	Put	OTR		0	4,100,000	0
SELECT SECTOR SPDR TR	ENERGY	81369Y506	183,651	2,550,000	SH	Call	OTR		0	2,550,000	0
SELECT SECTOR SPDR TR	FINANCIAL	81369Y605	2,672	88,000	SH		OTR		0	88,000	0
SHAW COMMUNICATIONS INC	CL B CONV	82028K200	2,067	85,000	SH		OTR		0	85,000	0
SITIO ROYALTIES CORP	*W EXP 08/23/202	82982V119	509	2,991,816	SH		OTR		0	2,991,816	0
SM ENERGY CO	COM	78454L100	7,705	204,863	SH		OTR		0	204,863	0
SPDR GOLD TR	GOLD SHS	78463V107	162,404	1,050,000	SH	Call	OTR		0	1,050,000	0
SPDR GOLD TR	GOLD SHS	78463V107	326,354	2,110,000	SH	Put	OTR		0	2,110,000	0
SPDR GOLD TR	GOLD SHS	78463V107	167,731	1,084,445	SH		OTR		0	1,084,445	0
SPDR INDEX SHS FDS	EURO STOXX 50	78463X202	2,615	85,000	SH	Put	OTR		0	85,000	0
SPDR INDEX SHS FDS	EURO STOXX 50	78463X202	989	32,150	SH		OTR		0	32,150	0
SPDR S&P 500 ETF TR	TR UNIT	78462F103	30,651	85,814	SH		OTR		0	85,814	0
SPDR S&P 500 ETF TR	TR UNIT	78462F103	96,153	269,200	SH	Put	OTR		0	269,200	0
SPDR S&P 500 ETF TR	TR UNIT	78462F103	24,110	67,500	SH	Call	OTR		0	67,500	0
SPDR SER TR	BLOOMBERG HIGH Y	78468R622	309	3,517	SH		OTR		0	3,517	0
SPDR SER TR	S&P OILGAS EXP	78468R556	138,369	1,109,437	SH		OTR		0	1,109,437	0
STANLEY BLACK & DECKER INC	UNIT 11/15/2022	854502846	840	17,037	SH		OTR		0	17,037	0
SUNNOVA ENERGY INTL INC.	NOTE 0.250%12/0	86745KAF1	15,951	19,000,000	PRN		OTR		0	0	19,000,000
SUPERNOVA PARTN ACQ CO III L	*W EXP 99/99/999	G8T90F128	11	133,559	SH		OTR		0	133,559	0
SVF INVESTMENT CORP	*W EXP 12/20/202	G8601L128	7	42,553	SH		OTR		0	42,553	0
SVF INVESTMENT CORP	CL A SHS	G8601L102	1,079	108,344	SH		OTR		0	108,344	0
SVF INVESTMENT CORP 2	CL A SHS	G8601M100	1,984	200,000	SH		OTR		0	200,000	0
TAILWIND ACQUISITION CORP	*W EXP 09/07/202	87403Q110	26	321,780	SH		OTR		0	321,780	0
TISHMAN SPEYER INNOVATION CO	*W EXP 02/11/202	88825H118	14	140,000	SH		OTR		0	140,000	0
TRICIDA INC	NOTE 3.500% 5/1	89610FAB7	4,157	7,779,000	PRN		OTR		0	0	7,779,000
UGI CORP NEW	UNIT 06/01/2024	902681113	1,362	17,073	SH		OTR		0	17,073	0
VACCITECH PLC	ADS	91864C107	1,737	542,673	SH		OTR		0	542,673	0
VANECK ETF TRUST	GOLD MINERS ETF	92189F106	4,238	175,713	SH		OTR		0	175,713	0
VANECK ETF TRUST	GOLD MINERS ETF	92189F106	85,915	3,562,000	SH	Call	OTR		0	3,562,000	0
VECTOIQ ACQUISITION CORP II	UNIT 99/99/9999	92244F208	11,054	1,120,000	SH		OTR		0	1,120,000	0
VINTAGE WINE ESTATES INC	*W EXP 06/08/202	92747V114	1,998	5,057,456	SH		OTR		0	5,057,456	0
WAYFAIR INC	CL A	94419L101	572	17,579	SH		OTR		0	17,579	0
WISDOMTREE TR	JAPN HEDGE EQT	97717W851	6,168	100,000	SH	Put	OTR		0	100,000	0
ZENDESK INC	COM	98936J101	571	7,500	SH		OTR		0	7,500	0