##fileformat=VCFv4.3
##FILTER=<ID=PASS,Description="All filters passed">
##INFO=<ID=AD,Number=R,Type=Integer,Description=Allelic depths for the ref and alt alleles in the order listed>
##INFO=<ID=XX,Number=R,Type=Integer,Description=Allelic depths for the ref and alt alleles in the order listed>
##FORMAT=<ID=AD,Number=R,Type=Integer,Description=Allelic depths for the ref and alt alleles in the order listed>
##FORMAT=<ID=XX,Number=R,Type=Integer,Description=Allelic depths for the ref and alt alleles in the order listed>
##FORMAT=<ID=GT,Number=1,Type=String,Description=Genotype>
##contig=<ID=20,length=63025520>
#CHROM	POS	ID	REF	ALT	QUAL	FILTER	INFO	FORMAT	SAMPLE
20	10101010	.	C	G	.	PASS	AD=2,48;XX=2,48	GT:AD:XX	1/0:2,48:2,48
20	10101010	.	C	T	.	PASS	AD=50,.;XX=2,.	GT:AD:XX	0/1:50,.:2,.
20	20202020	.	C	G	.	PASS	AD=63,48;XX=2,48	GT:AD:XX	1/0:63,48:2,48
20	20202020	.	C	T	.	PASS	AD=50,61;XX=2,61	GT:AD:XX	0/1:50,61:2,61
