CIRROSTRATUS

ai ar as at is it oi or os si so ta ti to us ut

act air ais ait arc ars art ass att car cat cis cor cos cot cru cur cut its oar oat oca ora orc ors ort our out rai ras rat ria roc rot rut sac sat sau sic sir sis sit sos sot sou sri tao tar tas tat tau tic tis tit tor tot tui tut uta uts

acts airs airt aits arco arcs arts asci auto carr cars cart cast cats ciao cist coat coir cors coss cost cots cris crit crus curr curs curt cuss cuts iota oars oast oats ocas orca orcs orra orts osar ossa otic ours oust outs rais rato rats rias riot roar rocs rota roti rots rout rust ruts sacs sari sati scar scat scot scut sics sirs sits soar soca sora sori sort sots sour sous sris star stat stir stoa stot suit sura taco tact taos taro tars tart tass tats taus taut tics tiro tits toit tora torc tori torr tors tort toss tost tots tour tout trio trot tsar tuis tuts uric ursa utas