a-a a-c a-z aaa aac aak aao aaw aay aaz ac- aca acc ack aco acw acy acz aka akc akk ako akw aoa aoc aok aoo aow aw- awa awc awk awo aww awy ay- aya ayc ayk ayo ayw ayz az- aza azo azw azy azz c-- caa cac cak cao caw cay caz cca ccc cck cco ccw ccz cka ckc cko ckw cky co- coa coc cok coo cow coy coz cw- cwa cwc cwk cwo cya cyc cyk cyo cyw cz- czc czk czo czw k-z ka- kaa kac kak kao kaw kay kaz kca kcc kck kkc kkk kky koa koc kok koo kow koy koz kw- kwa kwc kwk kwo kww kya kyc kyo kyw kyz kzo kzw kzy oaa oac oak oao oaw oc- oca occ ock oco ocw ocz oka okc okk oko okw oo- ooa ooc ook ooo oow owa owc owk owo oww oya oyo oza ozo ozw ozz waa wac wak wao waw way waz wca wcc wck wco wcw wka wkc wko wkw wky woa woc wok woo wow woy woz wwa wwc wwo www wy- wya wyc wyk wyo wzc yaa yac yak yao yaw yay yaz yca ycc yco ycw ycy yka ykk yoc yok yoo yow yoy ywc yyc yyy yyz yzy zaa zac zak zao zay zaz zco zka zo- zoa zoc zok zoo zow zzy zzz