##fileformat=VCFv4.2
##FILTER=<ID=PASS,Description="All filters passed">
##FORMAT=<ID=GT,Number=1,Type=String,Description="Genotype">
##contig=<ID=20,length=2147483647>
#CHROM	POS	ID	REF	ALT	QUAL	FILTER	INFO	FORMAT	sample
20	1	.	A	C	.	.	.	GT	0|0|1|0
20	1	.	A	G	.	.	.	GT	0|1|0|0
20	1	.	A	T	.	.	.	GT	1|0|0|0
