a-ak a-ok aaaa aaap aaas aaka aaoo aapa aapo aaps aasa aass akaa akao akap akas akka akko akok akos akpo aksa aokp aoks aopo aosp aoss apak apao apap apas apo- apoo apop apos appa apps apsa apso apss asaa asak asao asap asas aska asko asks asok asop asos aspa aspo asps assa assk asso assp asss k-os kaaa kaak kaap kaas kaka kakk kako kaks kaoa kaok kaos kap- kapa kapo kapp kaps kas- kasa kask kaso kasp kass kkaa kkap kkkk kkoa kkoo kkpk kkps kksa kksp kkss koak koap koas koka kokk koko kokp koks kook kooo koop koos kopa kopp kops kos- kosa koso kosp koss kpak kpao kpas kpkk kpoa kpok kpoo kpop kppk kppo kppp kpso kpsp ksak ksas kska kskk ksko ksks ksok ksoo ksop ksos kspa kspk kspo ksps kssa ksso ksss oaks oaps oass okak okap okas okka okko okok okpo oksa okso ooaa ooak oooo ooos oops oosa opap opo- opos oppa oppo opps opsa osak osap osas osoo osos ossa osso paak paap paas paka pako paks paos papa papp paps pasa pask paso pasp pass poak poas poka poko pook poop poos pop- popa popo popp pops posa posk poso poss ppap ppoa ppos pppa pppo pppp ppps ppss psap psas psoa psos pspp psps pssa psso s-os saak saap saas saka sakk sako saks saos sapa sapo sapp saps sasa sask saso sass skap skop skpo skss soak soap soas soka sokk soko sook soop soos sopa sopo sopp sops sosa soso soss sp-a spak spap spas spok spoo spop spos spps spsa spso spsp spss ssaa ssao ssap ssas ssop sspa sspo ssps sssa ssss