chr1	999	1000	A
chrX	999	1000	A
chrY	999	1000	A
chrM	999	1000	A
chr20	551233	551234	T/G
chr20	567889	567890	C/G
chr10	987455	987456	T
chr10	5672340	5672341	G/A
chr1	999	1000	A/C
chrX	999	1000	A/C
chrY	999	1000	A/C
chrM	999	1000	A/C
chr20	551233	551234	T
chr20	567889	567890	C/G
chr10	987455	987456	T/C
chr10	5672340	5672341	A
chr1	999	1000	A
chrX	999	1000	A
chrY	999	1000	A
chrM	999	1000	A
chr20	551233	551234	T
chr20	567889	567890	C
chr10	987455	987456	T/C
chr10	5672340	5672341	G/A
chr1	999	1000	A/C
chrX	999	1000	A/C
chrY	999	1000	A/C
chrM	999	1000	A/C
chr20	551233	551234	G
chr20	567889	567890	C
chr10	987455	987456	T/C
chr10	5672340	5672341	G/A
chr1	999	1000	A/C
chrX	999	1000	C
chrY	999	1000	A
chrM	999	1000	A/C
chr20	551233	551234	T/G
chr20	567889	567890	C/G
chr10	987455	987456	T/C
chr10	5672340	5672341	G/A
chr1	999	1000	A/C
chrX	999	1000	A/C
chrY	999	1000	A/C
chrM	999	1000	A/C
chr20	551233	551234	T
chr20	567889	567890	G
chr10	987455	987456	T/C
chr10	5672340	5672341	A
chr1	999	1000	C
chrX	999	1000	A/C
chrY	999	1000	C
chrM	999	1000	A
chr20	551233	551234	G
chr20	567889	567890	C
chr10	987455	987456	T/C
chr10	5672340	5672341	G
chr1	999	1000	A/C
chrX	999	1000	A
chrY	999	1000	A/C
chrM	999	1000	A/C
chr20	551233	551234	G
chr20	567889	567890	C
chr10	987455	987456	T/C
chr10	5672340	5672341	A