##fileformat=VCFv4.2
##contig=<ID=chr1>
##FORMAT=<ID=GT,Number=1,Type=String,Description="Genotype">
#CHROM	POS	ID	REF	ALT	QUAL	FILTER	INFO	FORMAT	SAMPLE
chr1	3	.	G	T	.	.	.	GT	1|0
chr1	4	.	T	A	.	.	.	GT	0|1
