readA                 GCTGAGGCAGGAGAATTGCTTGAACCTGGGAGGCA
 readB       TACTCAGGAGGCTGAGGCAGGAGAATTGCTTGAAC
 readC                 GCTGAGGCAGGAGAATTGCTTGAACTTAGGGGATG
 readD       TACTCGGGAGGCTGAGGCAGGAGAATTGCTTGAAC