K-mer                P-value<=  N      B     n     b     Enrichment
uguaca               2.46E-12   10000  219   731   52    3.25      
guacaU               5.06E-09   10000  80    753   26    4.32      
uuuaua               4.27E-07   10000  265   1235  68    2.08      
uguaAA               1.51E-06   10000  215   1224  57    2.17