a-ak a-ok aaaa aaac aaap aaca aacc aack aaco aacp aaka aaoo aapa aapc aapo acaa acac acap acca accc acco accp acoa acop acpa akaa akao akap akca akka akko akok akpo aoca aokp aopo apac apak apao apap apca apcc apco apo- apoc apoo apop appa appc aza- azap azaz azca azo- azoo azza azzo caaa caac caap cac- caca cacc cack caco caka caoz capa capc capo capp capz caza cazo ccaa ccac ccap ccca cccc cccp ccoc ccpa ccpp ckac ckck ckco ckoa ckoc ckoo ckpc coak coca cock coco cocp cok- coka coko cook coop copa copo copp cozz cpaa cpac cpap cpca cppa kaaa kaak kaap kacc kaco kacp kacz kaka kakc kakk kako kaoa kaoc kaok kap- kapa kapc kapo kapp kapz kaza kazc kazo kazz kcaa kcac kcap kcca kccc kcck kckc kckk kcko kckz kcoz kcpa kcpc kcpo kczo kczz kkaa kkac kkap kkck kkco kkkk kkoa kkoo kkoz kkpc kkpk kkpz kkzz koac koak koap koaz koca kock kocp koka kokc kokk koko kokp kokz kooc kook kooo koop kooz kopa kopp koza kozk kozo kpac kpak kpao kpcc kpkk kpoa kpoc kpok kpoo kpop kppc kppk kppo kppp kpza kpzk kzap kzaz kzkz kzoo kzoz kzpa kzpk kzpo kzza kzzk kzzo kzzp kzzz ocac ocak ocap occa occc ocpa ocpp okak okap okaz okka okko okok okpo ooaa ooak oooo opap opca opo- oppa oppo paak paap paaz paca pack paco paka pako paoc papa papp paza pazo pcaa pcap pcca pccc pcoa pcpp poak poca pock poco poka poko pook poop pop- popa popc popo popp pozo ppac ppap ppcc ppoa pppa pppo pppp zaca zack zaka zakk zapp zaza zoco zoo- zook zoop zopa zoza zozo zzzz