>chr1:0-3
AAA
>chr3:0-3
TTT
>chr1:4-7
CCC
>chr3:4-7
GGG
>chr1:2-5
AAC
>chr3:2-5
TTG
>chr1:0-25
AAAACCCCGGGGTTTTAAAACCCCG
>chr3:0-14
TTTTGGGGCCCCAA
