>seq001 {"definition":"basic DNA sequence"}
cgatcgatcgatcgatcgat
>seq002 {"definition":"GC-rich sequence"}
gcgcgcgcgcgcgcgcgcgc
>seq003 {"definition":"AT-rich sequence"}
atatatatatatatatatat
>seq004 {"definition":"palindromic sequence"}
aattccggaattccggaatt
>seq005 {"definition":"mixed sequence"}
agctagcatgcatagccgat