aaaa aaar aaas aaoo aara aaro aars aart aasa aass aast aata aatt aora aors aort aoss arar aras arat aroa aroo aror aros arr- arra arro arrr arrs arrt ars- arsa arso arst arta arto artr arts asaa asao asar asas asat asor asos asot asra asro asrs assa asso assr asss asst asta asto astr asts at-t ataa atar atas atat ator atos atot atra atro atst atta atto attr atts oara oars oass oast oats ooaa oooo ooos oora oort oosa oost oots orao orar oras orat oro- oror oros orot orra orro orrs orsa orso orta orto orts osar osas osat osoo osor osos osro ossa osso osta ostr osts otar otas oto- otoo otor otos otra otro otrs otsa otso otta otto otts raas raat raos rara raro rars rasa raso rass rast rata rato rats ratt roar roas roat roor roos root rora roro rort rosa roso ross rost rota roto rotr rots rott rras rrat rrrr rsaa rsos rssa rsts rtas rtss rtts s-os saar saas saat saor saos sara saro sarr sars sart sasa saso sass sast sata sato satr sats satt soar soas soat soor soos soot sora soro sorr sors sort sosa soso soss sost sota soto sots sras sros srta srtr ssaa ssao ssas ssat ssot ssra ssrs sssa ssss ssta ssts star stas stat stoa stoo stor stos stot stra stro strs stss sttr taa- taar taas taat taoa taor taos tara taro tarr tars tart tasa tasr tass tast tata tato tatr tats tatt toas toat tooa toor toos toot tora toro torr tors tort tosa toso toss tost tota toto totr tots tott traa trao tras trat troa troo tros trot trra trst trtr tsaa tsao tsar tsat tsos tssa tssr tsst tsts ttss tttt