>TESTFASTA00
ACGTTTTTTTTTTTTT
>TESTFASTA01
AAACAGATCACCCGCT
>TESTFASTA02
NNNNTTTTGGGGCCCCAAAA
>TESTFASTA03
NNNNNAAAANNNNNNN
>TESTFASTA04
TTTTGGGGCCCCAAAA
>TESTFASTA05
TTTTGGGGCCAAAA
>TESTFASTA06
NNNNNAAAANNNNNNN
>TESTFASTA07
TTTTGGGGAACCCCAAAA
>TESTFASTA08
TTTTGGGGCCAAAAAA