##fileformat=VCFv4.2
##contig=<ID=12,length=133851895>
##contig=<ID=20,length=63025520>
##reference=file://hs37d5.fa
#CHROM	POS	ID	REF	ALT	QUAL	FILTER	INFO
20	100	.	G	T	.	.	.
20	140	.	G	A	.	.	.
12	55	.	C	T	.	.	.
