>Bla-Let-7-P3_pre
UGAGGUAGUAGGUUGUAUAGUUGAGAAGUACAACAUUGGAGAUGACUGUACAACCCGUUACCUUUUU
>Bla-Let-7-P4_pre
UGAGGUAGUAGGUUGUAUAGUUGAGAAGUACAUCAUUGGAGAUAACUGUGCAACCUGCUAGCUCUCC