>chr1
ATATATATAT
GCGCGCGCGC
CACACACACA
TGTGTGTGTG
AACCAACCAA
AAAAAAAAAA
GGGGGGGGGG
TTTAAATTTA
>chr2
AAAAATTTTT
GGGGGAAAAA
CCCCCGGGGG
TTTTTCCCCC
GGAAGGAAGG
CCCCCCCCCC
TTTTTTTTTT
CTGTATCTGT
