UROSOMITIC

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cis coo cor cos cot cru cum cur cut ism its mic mir mis moc moo mor mos mot mus mut oms oot orc ors ort our out rim roc rom rot rum rut sic sim sir sit som sot sou sri sum tic tis tom too tor tui uts

cist coir coos coot corm cors cost cots cris crit crus curs curt cuts iris mics miri mirs miso mist mocs moor moos moot mors mort most mots must muts omit oots orcs orts otic ours oust outs rims riot rocs roms room root roti roto rots rout rums rust ruts scot scum scut smit smut soot sori sort sour stir stum suit sumo tics tiro toms toom torc tori toro tors tour trim trio tuis uric