k-os kkkk kknn kkno kkns kkon kkoo kkor kkov kkrk kkrn kkro kkrr kkrs kkrv kksn kksr kkss kkvr kkvv knkk knnk knnr knns knok knon knor knrk knro knrs knrv knsk knsn knso knsr knss knvn knvo knvr kokk kokn koko kokr koks konk kono kook koon kooo koor koos koov kork korn koro korr kors korv kos- koso kosr koss kovk kovo kovr krkk krkn krko krkr krks krkv krnk krnn krno krnv krok kroo kror kros krov krrk krrn krro krrr krrs krsk krsn krsr krss krsv krvk krvn krvo krvr krvs krvv kskk kskn ksko kskr ksks ksnk ksnn ksnr ksns ksnv ksok kson ksoo ksor ksos ksrn ksro ksrr ksrs ksrv kssn ksso kssr ksss ksvn ksvr kvnn kvno kvnr kvns kvok kvon kvoo kvor kvov kvro kvrr kvrv kvso kvsr kvss kvsv kvvn kvvr kvvs kvvv nkok nkor nnnn nnos nnss noko non- nonn nono nons noo- nook noon nooo noor noos noov nor- nork norn noro norr nors norv nos- nosk noss nov- novo nron nrsv nskk nsnr nsok nsos nsso nssr nsss nvss okko okno okok okon okor okro okso onno onon onor onos onso oons oooo ooos orko orno orns oro- orok oron oror oros orro orrs orsk orso orvr orvs osno osnr osoo osor osos osov osro osso ovo- ovon ovoo rkos rkss rksv rokk roko rokr roks ronk rono rons rook roon roor roos rork roro roso ross rovo rovs rrrr rsnn rsno rsnr rsos s-os skn- skon skor skov skss snns snoo snor snos snov snrk snrs sokk sokn soko son- sonk sono sons sook soon soor soos sorn soro sorr sors soso soss sosv sovo sovs srnn srno sros srvn ssns ssrs ssss svns svor vkor vnso voks vonk vonn vons voor vor- voro vors voso voss vovk vrnn vron vvvv