a-a a-b a-i a-z aaa aab aai aak aao aaw aaz ab- aba abb abi abk abo abw abz ai- aia aib aii aik aio aiw aiz aka akb aki akk ako akw aoa aob aoi aok aoo aow aw- awa awb awi awk awo aww az- aza azb azi azo azw azz baa bab bai bak bao baw baz bba bbb bbi bbk bbo bbw bi- bia bib bii bik bio biw biz bka bkb bkk bko bkw boa bob boi bok boo bow boz bwa bwb bwi bwk bwo bza bzo bzz ia- iaa iab iai iao iaw iaz iba ibb ibi ibk ibo ibw ibz iia iib iii iio iiw ika ikb iki ikk iko io- ioa iob ioi ioo iow iwa iwb iwi iwk iwo iww iwz iza izi izo izz k-z ka- kaa kab kai kak kao kaw kaz kba kbb kbi kbk kbo kbw kbz kia kib kii kik kio kiz kkb kki kkk koa kob koi kok koo kow koz kw- kwa kwi kwk kwo kww kzo kzw o-i oaa oab oai oak oao oaw ob- oba obb obi obk obo obw oia oib oii oik oio oiz oka okb oki okk oko okw oo- ooa oob ooi ook ooo oow owa owb owi owk owo oww oza ozo ozw ozz waa wab wai wak wao waw waz wba wbb wbi wbo wbw wbz wia wib wii wik wiz wka wkb wko wkw woa wob woi wok woo wow woz wwa wwi wwo www zaa zab zai zak zao zaz zbb zbw zia zib zik zio ziw ziz zka zo- zoa zob zoi zok zoo zow zzz