k-os kkkk kkmk kkmo kkmr kkms kkmv kkoo kkor kkov kkrk kkro kkrr kkrs kkrv kksm kksr kkss kkvm kkvr kkvv kmkk kmko kmks kmkv kmmk kmmm kmmo kmmr kmms kmok kmom kmor kmov kmro kmrr kmrs kmrv kmso kmsr kmss kmvk kmvr kokk koko kokr koks komo komr koms kook kooo koor koos koov kork koro korr kors korv kos- koso kosr koss kovk kovo kovr krkk krko krkr krks krkv krmo krmr krms krok krom kroo kror kros krov krrk krrm krro krrr krrs krsk krsr krss krsv krvk krvm krvo krvr krvs krvv kskk ksko kskr ksks ksmm ksmo ksmr ksms ksok ksom ksoo ksor ksos ksrm ksro ksrr ksrs ksrv kssm ksso kssr ksss ksvr kvmo kvmr kvmv kvok kvom kvoo kvor kvov kvro kvrr kvrv kvso kvsr kvss kvsv kvvr kvvs kvvv mkks mksm mmmm mmms mmor moko momo moms mook moor moos moov mork moro mors mosk moso moss mrkr msmm msms msor mssm mssr msvs okko okmo okok okom okor okro okso omo- omoo omor omov omro omsk ooms oooo ooos orko ormo oro- orok orom oror oros orro orrs orsk orso orvr orvs osm- osmo osoo osor osos osov osro osso ovms ovo- ovoo rkos rkss rksv rmmv rokk roko rokr roks romk romm romo roms rook room roor roos rork roro roso ross rovo rovs rrkm rrrr rsmv rsos s-os skor skov skss smok smos smrk smss sokk soko somm somo sook soom soor soos sorm soro sorr sors soso soss sosv sovo sovs sros ssrm ssrs sssm ssss ssvm svor vkor vmos voks voms voom voor vor- vorm voro vors voso voss vovk vrms vvvv