a-a a-b a-i a-z aaa aab aai aak aao aau aaz ab- aba abb abi abk abo abu abz ai- aia aib aii aik aio aiu aiz aka akb aki akk ako aku aoa aob aoi aok aoo aou au- aua aub aui auk auo auz az- aza azb azi azo azu azz b-u baa bab bai bak bao bau baz bba bbb bbi bbk bbo bbu bi- bia bib bii bik bio biu biz bka bkb bkk bko boa bob boi bok boo bou boz bua bub bui buk buo buu buz bza bzo bzu bzz ia- iaa iab iai iao iau iaz iba ibb ibi ibk ibo ibu ibz iia iib iii iio iiu ika ikb iki ikk iko iku io- ioa iob ioi ioo iou iu- iua iub iui iuz iza izi izo izu izz k-z ka- kaa kab kai kak kao kau kaz kba kbb kbi kbk kbo kbu kbz kia kib kii kik kio kiu kiz kkb kki kkk kku koa kob koi kok koo kou koz kub kui kuk kuu kzo o-i oaa oab oai oak oao oau ob- oba obb obi obk obo obu oia oib oii oik oio oiu oiz oka okb oki okk oko oku oo- ooa oob ooi ook ooo ou- oua oui ouk ouo oza ozo ozu ozz ua- uaa uab uai uak uao uau uaz uba ubb ubi ubk ubo ubu uia uib uii uio uiu uka ukb uki ukk uku ukz uoa uob uok uoo uua uuu uza uzb uzi uzo uzu zaa zab zai zak zao zaz zbb zia zib zik zio ziz zka zo- zoa zob zoi zok zoo zou zub zui zuk zuz zzz