-ic bbb bbc bbh bbi bbk bbo bcb bcc bch bci bck bco bhb bhc bhh bhi bhk bho bi- bib bic bih bii bik bio bkb bkc bkk bko bob boc boh boi bok boo c-- cbb cbc cbh cbi cbk cbo ccb ccc cch cci cck cco ch- chb chc chh chi chk cho ci- cib cic cih cii cik cio ckb ckc ckh cki cko co- cob coc coh coi cok coo h-i hbb hbc hbh hbi hbk hbo hcb hcc hch hci hck hco hhb hhc hhh hhi hhk hho hib hic hih hii hik hio hkb hkh hki hkk hko hob hoc hoh hoi hok hoo ibb ibc ibh ibi ibk ibo icb icc ich ici ick ico ihb ihc ihh ihi ihk iho iib iic iih iii iio ikb ikc iki ikk iko io- iob ioc ioh ioi ioo kbb kbc kbh kbi kbk kbo kcb kcc kch kci kck khh khi khk kho kib kic kih kii kik kio kkb kkc kkh kki kkk kob koc koh koi kok koo o-i ob- obb obc obh obi obk obo oc- ocb occ och oci ock oco ohc ohh ohi oho oib oic oii oik oio okb okc oki okk oko oo- oob ooc ooh ooi ook ooo