bbb bbh bbi bbk bbo bbr bhb bhh bhi bhk bho bhr bi- bib bih bii bik bio bir biz bkb bkk bko bkr bob boh boi bok boo bor boz brb brh bri brk bro brr brz bzh bzo bzr bzz h-i hbb hbh hbi hbk hbo hbr hbz hhb hhh hhi hhk hho hhr hhz hib hih hii hik hio hir hkb hkh hki hkk hko hkr hob hoh hoi hok hoo hor hr- hrb hrh hri hrk hro hrr hrz hzo ibb ibh ibi ibk ibo ibr ibz ihb ihh ihi ihk iho ihr iib iih iii iio iir ikb iki ikk iko ikr io- iob ioh ioi ioo ior ir- irb iri irk iro irr izh izi izo izz k-z kbb kbh kbi kbk kbo kbr kbz khh khi khk kho khr khz kib kih kii kik kio kir kiz kkb kkh kki kkk kkr kob koh koi kok koo kor koz kri krk kro krr kzo o-i ob- obb obh obi obk obo obr ohh ohi oho ohr oib oii oik oio oir oiz okb oki okk oko okr oo- oob ooh ooi ook ooo oor or- orb orh ori ork oro orr orz ozo ozz rbb rbh rbi rbk rbo rbr rh- rhb rhh rhi rho rhr rib rih rii rik rio rir riz rkb rkk rko rkz rob roh roi rok roo ror roz rrb rrh rri rrk rrr rzb rzo zbb zbr zhi zho zhr zib zik zio zir ziz zo- zob zoi zok zoo zor zrh zro zzr zzz