OSTRACUM

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act amu arc arm ars art cam car cat cor cos cot cru cum cur cut mac mar mas mat moa moc mor mos mot mus mut oar oat oca oms ora orc ors ort our out ram ras rat roc rom rot rum rut sac sat sau som sot sou sum tam tao tar tas tau tom tor uta uts

acts amus arco arcs arms arts arum atom auto camo cams cars cart cast cats coat coma corm cors cost cots cram crus curs curt cuts macs marc mars mart mast mats maut moas moat mocs mora mors mort most mots mura must muts oars oast oats ocas orca orcs orts osar ours oust outs rams rato rats roam rocs roms rota rots rout rums rust ruts scam scar scat scot scum scut smut soar soca soma sora sort sour star stoa stum sumo sura taco tams taos taro tars taus toms tora torc tors tour tram tsar ursa utas