k-os kkkk kkoo kkor kkoy kkoz kkrk kkro kkrr kkrs kkrz kksr kkss kkys kkyy kkyz kkzy kkzz kokk koko kokr koks koky kokz kook kooo koor koos kooz kork koro korr kors kos- koso kosr koss kosy kosz koyo koyy kozk kozo kozr kozy krkk krko krkr krks krky krkz krok kroo kror kros kroy kroz krrk krro krrr krrs krry krrz krsk krsr krss krsy kryk kryo kryy krzk krzr krzs krzy krzz kskk ksko kskr ksks ksky kskz ksok ksoo ksor ksos ksro ksrr ksrs ksry ksrz ksso kssr ksss kssz ksyr ksyy kszr kykk kykr kyks kyky kykz kyok kyoo kyor kyos kyoy kyrk kyro kyrs kysk kysr kyyk kyyo kyys kyyy kyyz kyzk kyzs kyzz kzkr kzks kzky kzkz kzoo kzor kzoy kzoz kzrk kzro kzrr kzrs kzrz kzyr kzzk kzzo kzzr kzzs kzzy kzzz okko okok okor okro okso okyo ooky oooo ooos oory oozy orko oro- orok oror oros oroy oroz orro orrs orry orsk orso orsy orys orzk orzo osoo osor osos osro osso ossy oyss ozzy rkos rkss rokk roko rokr roks roky rook roor roos rooz rork roro rory roso ross rosy roys rozz rrrr rsos rysy s-os skor skss sky- skyr skys skyy sokk soko sook soor soos sooy soro sorr sors sory soso soss soyo soys soz- sros ssrs ssss syro syrs syry syso syss syyk szss szyk ykko yoko yoks yoky yook yooz york yoro yory yoso yoyo yozo yyyy z-ro zoo- zook zoos zork zoro zors zory zoso zoss zozo zsss zzzs zzzz