a-a a-b a-i a-z aaa aab aah aai aao aar aaz ab- aba abb abh abi abo abr abz aha ahb ahh ahi aho ahr ahz ai- aia aib aih aii aio air aiz aoa aob aoh aoi aoo aor ar- ara arb arh ari aro arr arz az- aza azb azi azo azz baa bab bah bai bao bar baz bba bbb bbh bbi bbo bbr bha bhb bhh bhi bho bhr bi- bia bib bih bii bio bir biz boa bob boh boi boo bor boz bra brb brh bri bro brr brz bza bzh bzo bzr bzz h-i haa hab hah hai hao har haz hba hbb hbh hbi hbo hbr hbz hha hhb hhh hhi hho hhr hhz hia hib hih hii hio hir hoa hob hoh hoi hoo hor hr- hra hrb hrh hri hro hrr hrz hzo ia- iaa iab iah iai iao iar iaz iba ibb ibh ibi ibo ibr ibz iha ihb ihh ihi iho ihr iia iib iih iii iio iir io- ioa iob ioh ioi ioo ior ir- ira irb iri iro irr iza izh izi izo izz o-i oaa oab oah oai oao oar ob- oba obb obh obi obo obr oha ohh ohi oho ohr oia oib oii oio oir oiz oo- ooa oob ooh ooi ooo oor or- ora orb orh ori oro orr orz oza ozo ozz ra- raa rab rah rai rao rar raz rba rbb rbh rbi rbo rbr rh- rha rhb rhh rhi rho rhr ria rib rih rii rio rir riz roa rob roh roi roo ror roz rra rrb rrh rri rrr rza rzb rzo zaa zab zah zai zao zar zaz zbb zbr zha zhi zho zhr zia zib zio zir ziz zo- zoa zob zoi zoo zor zrh zro zzr zzz