-ic bbb bbc bbh bbi bbo bbr bcb bcc bch bci bco bcr bhb bhc bhh bhi bho bhr bi- bib bic bih bii bio bir bob boc boh boi boo bor brb brh bri bro brr c-- cbb cbc cbh cbi cbo cbr ccb ccc cch cci cco ccr ch- chb chc chh chi cho chr ci- cib cic cih cii cio cir co- cob coc coh coi coo cor crb crc crh cri cro crr h-i hbb hbc hbh hbi hbo hbr hcb hcc hch hci hco hcr hhb hhc hhh hhi hho hhr hib hic hih hii hio hir hob hoc hoh hoi hoo hor hr- hrb hrc hrh hri hro hrr ibb ibc ibh ibi ibo ibr icb icc ich ici ico icr ihb ihc ihh ihi iho ihr iib iic iih iii iio iir io- iob ioc ioh ioi ioo ior ir- irb irc iri iro irr o-i ob- obb obc obh obi obo obr oc- ocb occ och oci oco ocr ohc ohh ohi oho ohr oib oic oii oio oir oo- oob ooc ooh ooi ooo oor or- orb orc orh ori oro orr rbb rbc rbh rbi rbo rbr rcb rcc rch rci rco rcr rh- rhb rhc rhh rhi rho rhr rib ric rih rii rio rir rob roc roh roi roo ror rrb rrc rrh rri rrr