k-os kkkk kknn kkno kkns kkon kkoo kkor kkrk kkrn kkro kkrr kkrs kksn kksr kkss knkk knnk knnr knns knok knon knor knrk knro knrs knsk knsn knso knsr knss kokk kokn koko kokr koks konk kono kook koon kooo koor koos kork korn koro korr kors kos- koso kosr koss krkk krkn krko krkr krks krnk krnn krno krok kroo kror kros krrk krrn krro krrr krrs krsk krsn krsr krss kskk kskn ksko kskr ksks ksnk ksnn ksnr ksns ksok kson ksoo ksor ksos ksrn ksro ksrr ksrs kssn ksso kssr ksss nkok nkor nnnn nnos nnss noko non- nonn nono nons noo- nook noon nooo noor noos nor- nork norn noro norr nors nos- nosk noss nron nskk nsnr nsok nsos nsso nssr nsss 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 osno osnr osoo osor osos osro osso rkos rkss rokk roko rokr roks ronk rono rons rook roon roor roos rork roro roso ross rrrr rsnn rsno rsnr rsos s-os skn- skon skor skss snns snoo snor snos snrk snrs sokk sokn soko son- sonk sono sons sook soon soor soos sorn soro sorr sors soso soss srnn srno sros ssns ssrs ssss