rnin rrmc rrna rrrr rrum rrun ruag ruan ruca ruci ruga rugg rugi ruin ruma rumi rumm runa runc rung runi runn rura rurc ruri ruru ruun uaca uair uamc uang uarc uaru uaua ucai ucam ucan ucar ucca ucci ucin ucmc ucrc ucua ugar ugcc ugcg ugia ugni ugra ugri ugur uguu uica uima uira uirr umaa umac umag umai uman umar umma ummg umra umri unaa unac unai unam unan unar unau unca uncc uncg unci unga ungu uni- unia unic unii unin unir unma unmc unmr unna unni unra unum urac urai uran urau urca urci urga urgi urgu uria uric urim urin uriu urma urmi urna urni urra urri urum urun urur uuni uuri uuuu