-ic bbb bbc bbh bbi bbk bbo bby bcb bcc bch bci bck bco bcy bhb bhc bhh bhi bhk bho bi- bib bic bih bii bik bio biy bkb bkc bkk bko bob boc boh boi bok boo boy by- byc byh byi byk byo c-- cbb cbc cbh cbi cbk cbo cby ccb ccc cch cci cck cco ch- chb chc chh chi chk cho chy ci- cib cic cih cii cik cio ckb ckc ckh cki cko cky co- cob coc coh coi cok coo coy cyb cyc cyk cyo h-i hbb hbc hbh hbi hbk hbo hby hcb hcc hch hci hck hco hcy hhb hhc hhh hhi hhk hho hhy hib hic hih hii hik hio hkb hkh hki hkk hko hob hoc hoh hoi hok hoo hoy hy- hyb hyc hyh hyi hyo hyy ibb ibc ibh ibi ibk ibo iby icb icc ich ici ick ico icy ihb ihc ihh ihi ihk iho ihy iib iic iih iii iio ikb ikc iki ikk iko io- iob ioc ioh ioi ioo iyc iyo iyy 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 kky kob koc koh koi kok koo koy kyc kyo o-i ob- obb obc obh obi obk obo oby 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 oyi oyo ybc ybi yby ycc ych yci yco ycy yhc yhi yih yii yio yki ykk yob yoc yoi yok yoo yoy yyb yyc yyy