a-ak a-ok aaaa aaar aaas aaka aaoo aara aaro aars aasa aass akaa akao akar akas akka akko akok akos akr- akra aksa aoks aora aors aoss arak arar aras arka arko arks aroa aroo aror aros arr- arra arrk arro arrr arrs ars- arsa arsk arso asaa asak asao asar asas aska asko askr asks asok asor asos asra asro asrs assa assk asso assr asss k-os kaaa kaak kaar kaas kaka kakk kako kaks kaoa kaok kaor kaos kara kark karo karr kars kas- kasa kask kaso kasr kass kkaa kkar kkkk kkoa kkoo kkor kkrk kkro kkrr kkrs kksa kksr kkss koak koar koas koka kokk koko kokr koks kook kooo koor koos kora kork koro korr kors kos- kosa koso kosr koss krak krar kras krka krkk krko krkr krks kroa krok kroo kror kros krrk krro krrr krrs krsa krsk krsr krss ksak ksar ksas kska kskk ksko kskr ksks ksok ksoo ksor ksos ksra ksro ksrr ksrs kssa ksso kssr ksss oaks oara oars oass okak okas okka okko okok okor okra okro oksa okso ooaa ooak oooo ooos oora oosa orak orao orar oras orka orko oro- orok oror oros orra orro orrs orsa orsk orso osak osar osas osoo osor osos osro ossa osso raak raas raka rakk raok raos rara rark raro rars rasa rask raso rass rkos rkss roak roar roas roka rokk roko rokr roks rook roor roos rora rork roro rosa roso ross rras rrrr rsaa rsos rssa s-os saak saar saas saka sakk sako saks saor saos sara sark saro sarr sars sasa sask saso sass skar skor skra skss soak soar soas soka sokk soko sook soor soos sora soro sorr sors sosa soso soss sras sros ssaa ssao ssas ssra ssrs sssa ssss