a-a a-b a-i a-z aaa aab aah aai aao aaz ab- aba abb abh abi abo abz aha ahb ahh ahi aho ahz ai- aia aib aih aii aio aiz aoa aob aoh aoi aoo az- aza azb azi azo azz baa bab bah bai bao baz bba bbb bbh bbi bbo bha bhb bhh bhi bho bi- bia bib bih bii bio biz boa bob boh boi boo boz bza bzh bzo bzz h-i haa hab hah hai hao haz hba hbb hbh hbi hbo hbz hha hhb hhh hhi hho hhz hia hib hih hii hio hoa hob hoh hoi hoo hzo ia- iaa iab iah iai iao iaz iba ibb ibh ibi ibo ibz iha ihb ihh ihi iho iia iib iih iii iio io- ioa iob ioh ioi ioo iza izh izi izo izz o-i oaa oab oah oai oao ob- oba obb obh obi obo oha ohh ohi oho oia oib oii oio oiz oo- ooa oob ooh ooi ooo oza ozo ozz zaa zab zah zai zao zaz zbb zha zhi zho zia zib zio ziz zo- zoa zob zoi zoo zzz