a-a a-c a-z aaa aac aak aao aap aas aay aaz ac- aca acc ack aco acp acs acy acz aka akc akk ako akp aks aoa aoc aok aoo aop aos ap- apa apc apk apo app aps apy as- asa asc ask aso asp ass asy asz ay- aya ayc ayk ayo ayp ays ayz az- aza azo azp azs azy azz c-- caa cac cak cao cap cas cay caz cca ccc cck cco ccp ccs ccz cka ckc cko cks cky co- coa coc cok coo cop cos coy coz cpa cpc cpk cpo cpp cps cpz csa csc csk cso csp css csy csz cya cyc cyk cyo cyp cys cz- czc czk czo k-z ka- kaa kac kak kao kap kas kay kaz kca kcc kck kcp kcs kkc kkk kkp kks kky koa koc kok koo kop kos koy koz kpa kpc kpk kpo kpp kps ksa ksc ksk kso ksp kss kya kyc kyo kyp kys kyz kzo kzy oaa oac oak oao oap oas oc- oca occ ock oco ocp ocs ocz oka okc okk oko okp oks oo- ooa ooc ook ooo oop oos op- opa opc opk opo opp ops opy os- osa osc osk oso osp oss oya oyo oys oza ozo ozs ozz p-p paa pac pak pao pap pas pay paz pca pcc pck pco pcp pcs pka pkc pko pkp pks pky poa poc pok poo pop pos poy poz ppa ppc ppk ppo ppp pps ppz ps- psa psc psk pso psp pss psy py- pya pyc pyk pyo pys pzc pzk pzp saa sac sak sao sap sas say saz sca scc sck sco scp scs sk- ska skc skk sko skp sks sky soa soc sok soo sop sos soy soz spa spc spk spo spp sps spy spz ss- ssa ssc ssk sso ssp sss ssz sy- sya syc syk syp sys sza szp yaa yac yak yao yap yas yay yaz yca ycc yco ycp ycs ycy yka ykk yoc yok yoo yop yos yoy ypa ypo yps ysa ysc ysk yso ysp yss ysy ysz yyc yys yyy yyz yzy zaa zac zak zao zap zas zay zaz zco zcs zka zks zo- zoa zoc zok zoo zos zpc zpo zpp zsa zsz zzs zzy zzz