##fileformat=VCFv4.2
##FORMAT=<ID=GT,Number=1,Type=String,Description="Genotype">
##INFO=<ID=END,Number=1,Type=Integer,Description="End position of the variant described in this record">
##ALT=<ID=DEL,Description="Deletion">
##reference=file://some/path/human_g1k_v37.fasta
##contig=<ID=1,assembly=b37,length=249250621>
##contig=<ID=2,assembly=b37,length=249250621>
##contig=<ID=3,assembly=b37,length=249250621>
##contig=<ID=4,assembly=b37,length=249250621>
#CHROM	POS	ID	REF	ALT	QUAL	FILTER	INFO	FORMAT	NA001
1	59	.	C	a,Caa	.	PASS	.	GT	1|2
2	60	.	C	a,Caa	.	PASS	.	GT	1|2
3	61	.	C	a,Caa	.	PASS	.	GT	1|2
4	62	.	C	a,Caa	.	PASS	.	GT	1|2