k-lo k-os kkkk kkll kklo kkls kkol kkoo kkor kkrk kkrl kkro kkrr kkrs kksr kkss klkk klkl klko klkr klks kllk klls klok klol kloo klor klos klrk klrr klrs klsr kokk koko kokr koks kolk koll kolo kolr kols kook kool kooo koor koos kork korl koro korr kors kos- koso kosr koss krkk krko krkr krks krok krol kroo kror kros krrk krrl krro krrr krrs krsk krsl krsr krss kskk ksko kskr ksks kslk ksll kslo kslr ksok ksol ksoo ksor ksos ksro ksrr ksrs kssl ksso kssr ksss lkrs llks llll lloo lokk loko loll lolo lols look lool loor loos lork loro lors loso loss lrrr ls-r lsso lssr okko oklo okok okol okor okro okso ollo olor olos oolo oooo ooos orko orlo oro- orok oror oros orro orrs orsk orso oslo osoo osor osos osro osso rkos rkss rlls rokk roko rokr roks rolk roll rolo rook rool roor roos rork roro roso ross rrrr rsos rssl s-os skol skor skss sloo slos slrs sokk soko solk soll solo solr sols sook sool soor soos soro sorr sors soso soss sros ssrl ssrs ssss