a-a a-b a-z aaa aab aak aao aas aaw aay aaz ab- aba abb abk abo abs abw aby abz aka akb akk ako aks akw aoa aob aok aoo aos aow as- asa asb ask aso ass asw asy asz aw- awa awb awk awo aws aww awy ay- aya ayk ayo ays ayw ayz az- aza azb azo azs azw azy azz baa bab bak bao bas baw bay baz bba bbb bbk bbo bbs bbw bby bka bkb bkk bko bks bkw boa bob bok boo bos bow boy boz bsa bsb bsk bso bss bsw bsy bwa bwb bwk bwo bws bwy by- bya byk byo bys byz bza bzo bzs bzz k-z ka- kaa kab kak kao kas kaw kay kaz kba kbb kbk kbo kbs kbw kbz kkb kkk kks kky koa kob kok koo kos kow koy koz ksa ksb ksk kso kss ksw kw- kwa kwk kwo kws kww kya kyo kys kyw kyz kzo kzw kzy oaa oab oak oao oas oaw ob- oba obb obk obo obs obw oby oka okb okk oko oks okw oo- ooa oob ook ooo oos oow os- osa osb osk oso oss osw owa owb owk owo ows oww oya oyo oys oza ozo ozs ozw ozz saa sab sak sao sas saw say saz sba sbb sbk sbo sbs sbw sby sk- ska skb skk sko sks skw sky soa sob sok soo sos sow soy soz ss- ssa ssb ssk sso sss ssw ssz swa swb swk swo sws swy sy- sya syb syk sys sza waa wab wak wao was waw way waz wba wbb wbo wbs wbw wbz wka wkb wko wks wkw wky woa wob wok woo wos wow woy woz wsa wsb wsk wso wss wsw wwa wwo www wy- wya wyk wyo wys yaa yab yak yao yas yaw yay yaz ybs yby ybz yka ykk yob yok yoo yos yow yoy ysa ysb ysk yso yss ysy ysz yyb yys yyy yyz yzb yzy zaa zab zak zao zas zay zaz zbb zbs zbw zby zka zks zo- zoa zob zok zoo zos zow zsa zsz zws zzs zzy zzz