@seq001 {"sample":"S1"}
cccccccccccccccccccc
+
BBBBBBBBBBBBBBBBBBBB
@seq002 {"sample":"S2"}
tttttttttttttttttttt
+
BBBBBBBBBBBBBBBBBBBB
@seq003 {"sample":"S3"}
tttttttttttttttttttt
+
IIIIIIIIIIIIIIIIIIII