k-os kkkk kkoo kkov kkoy kkpk kkps kksp kkss kkvv kkys kkyy kokk koko kokp koks koky kook kooo koop koos koov kopp kops kopy kos- koso kosp koss kosy kovk kovo koyo koyy kpkk kpky kpok kpoo kpop kpoy kppk kppo kppp kppv kpso kpsp kpvs kpyk kpyv kskk ksko ksks ksky ksok ksoo ksop ksos kspk kspo ksps ksso ksss ksvp ksvy ksyv ksyy kvok kvoo kvop kvov kvps kvso kvsp kvss kvsv kvvp kvvs kvvv kykk kyks kykv kyky kyok kyoo kyos kyoy kyp- kyps kysk kysp kyyk kyyo kyys kyyy okko okok okpo okso okyo ooky oooo ooos oops opo- opos oppo opps oppy opsy osoo osos osov osso ossy osyp ovo- ovoo ovpp oyss poko poky pook poop poos pop- popo popp pops popy posk poso poss posy povo povs poyo poys ppos pppo pppp ppps ppss psos psov pspp psps psso psy- psys pykk pyo- pyos pypy pysk pyss s-os skop skov skpo skss sky- skys skyy sokk soko sook soop soos sooy sopo sopp sops sopy soso soss sosv sovo sovs soyo soys spok spoo spop spos spoy spps spso spsp spss spy- spys ssop sspo ssps ssss ssvp svoy sypo syso syss syyk voks voky voso voss vovk voys vsop vvvv vyos vyso vyss ykko yoko yoks yoky yook yoop yopo yopy yoso yoyo ysop yyyy