bbb bbh bbi bbo bbr bhb bhh bhi bho bhr bi- bib bih bii bio bir biz bob boh boi boo bor boz brb brh bri bro brr brz bzh bzo bzr bzz h-i hbb hbh hbi hbo hbr hbz hhb hhh hhi hho hhr hhz hib hih hii hio hir hob hoh hoi hoo hor hr- hrb hrh hri hro hrr hrz hzo ibb ibh ibi ibo ibr ibz ihb ihh ihi iho ihr iib iih iii iio iir io- iob ioh ioi ioo ior ir- irb iri iro irr izh izi izo izz o-i ob- obb obh obi obo obr ohh ohi oho ohr oib oii oio oir oiz oo- oob ooh ooi ooo oor or- orb orh ori oro orr orz ozo ozz rbb rbh rbi rbo rbr rh- rhb rhh rhi rho rhr rib rih rii rio rir riz rob roh roi roo ror roz rrb rrh rri rrr rzb rzo zbb zbr zhi zho zhr zib zio zir ziz zo- zob zoi zoo zor zrh zro zzr zzz