a-a a-b a-i a-z aaa aab aai aam aao aaz ab- aba abb abi abm abo abz ai- aia aib aii aim aio aiz ama amb ami amm amo amz aoa aob aoi aom aoo az- aza azb azi azm azo azz baa bab bai bam bao baz bba bbb bbi bbm bbo bi- bia bib bii bim bio biz bma bmb bmi bmm bmo bmz boa bob boi bom boo boz bza bzo bzz ia- iaa iab iai iam iao iaz iba ibb ibi ibm ibo ibz iia iib iii iim iio im- ima imb imi imm imo imz io- ioa iob ioi iom ioo iza izi izm izo izz m-o maa mab mai mam mao maz mba mbb mbi mbm mbo mi- mia mib mii mim mio miz mma mmb mmi mmm mmo mmz moa mob moi mom moo moz mza mzb mzi mzm o-i oaa oab oai oam oao ob- oba obb obi obm obo oia oib oii oim oio oiz om- oma omb omi omm omo omz oo- ooa oob ooi oom ooo oza ozm ozo ozz zaa zab zai zam zao zaz zbb zbm zia zib zim zio ziz zma zmb zmm zo- zoa zob zoi zom zoo zzz