a-ak aaaa aaac aaap aaas aaca aacc aack aacp aacs aaka aapa aapc aaps aasa aasc aass acaa acac acap acas acca accc accp accs acks acpa acps acsa acsc acss akaa akap akas akca akka aksa apac apak apap apas apca apcc apcs appa appc apps apsa apss asaa asac asak asap asas asc- asca ascc ascp aska asks aspa aspc asps assa assc assk assp asss caaa caac caap caas cac- caca cacc cack caka capa capc capp caps casa casc cask casp cass ccaa ccac ccap ccas ccca cccc cccp cccs ccpa ccpp ccps ccsa ccsp ccss ckac ckck ckcs ckpc cksa cpaa cpac cpap cpas cpca cpcs cppa cpps cpsa cpsc cpsk csaa csac csak csas cscc cscs cska csks cspa cspc csps cssa kaaa kaak kaap kaas kacc kacp kacs kaka kakc kakk kaks kap- kapa kapc kapp kaps kas- kasa kasc kask kasp kass kcaa kcac kcap kcas kcca kccc kcck kckc kckk kcpa kcpc kcps kcsa kcsc kcsp kcss kkaa kkac kkap kkck kkcs kkkk kkpc kkpk kkps kksa kksp kkss kpac kpak kpas kpcc kpcs kpkk kppc kppk kppp kpsc kpsp ksac ksak ksas ksca ksck kscs kska kskk ksks kspa kspc kspk ksps kssa ksss paak paap paas paca pack pacs paka paks papa papp paps pasa pasc pask pasp pass pcaa pcap pcas pcca pccc pccs pcks pcpp pcps pcsa pkcs ppac ppap ppcc ppcs pppa pppp ppps ppss psac psap psas psca pspp psps pssa pssc sa-c saac saak saap saas saca sacc sack sacs saka sakk saks sapa sapp saps sasa sasc sask sass scaa scac scak scap scas sccc sccp sccs sck- scpa scps scsa scsc skac skap skpc skss sp-a spac spak spap spas spca spcc spcs spps spsa spsp spss ssaa ssac ssap ssas ssca sscc sscp sscs sspa sspc ssps sssa sssc ssss