a-a a-c a-z aaa aac aah aak aao aas aaz ac- aca acc ach ack aco acs acz aha ahc ahh ahk aho ahs ahz aka akc akh akk ako aks aoa aoc aoh aok aoo aos as- asa asc ash ask aso ass asz az- aza azo azs azz c-- caa cac cah cak cao cas caz cca ccc cch cck cco ccs ccz ch- cha chc chh chk cho chs chz cka ckc ckh cko cks co- coa coc coh cok coo cos coz csa csc csh csk cso css csz cz- czc czk czo haa hac hah hak hao has haz hca hcc hch hck hco hcs hha hhc hhh hhk hho hhs hhz hka hkh hkk hko hks hoa hoc hoh hok hoo hos hsa hsc hsh hsk hss hsz hzo hzs k-z ka- kaa kac kah kak kao kas kaz kca kcc kch kck kcs kha khh khk kho khs khz kkc kkh kkk kks koa koc koh kok koo kos koz ksa ksc ksh ksk kso kss kzo oaa oac oah oak oao oas oc- oca occ och ock oco ocs ocz oha ohc ohh oho ohs oka okc okk oko oks oo- ooa ooc ooh ook ooo oos os- osa osc osh osk oso oss oza ozo ozs ozz saa sac sah sak sao sas saz sca scc sch sck sco scs sh- sha shc shh shk sho shs sk- ska skc skh skk sko sks soa soc soh sok soo sos soz ss- ssa ssc ssh ssk sso sss ssz sza zaa zac zah zak zao zas zaz zco zcs zha zhc zho zhs zka zks zo- zoa zoc zok zoo zos zsa zsh zsz zzs zzz