-ic bbb bbc bbi bbk bbo bbw bcb bcc bci bck bco bi- bib bic bii bik bio biw bkb bkc bkk bko bkw bob boc boi bok boo bow bwb bwc bwi bwk bwo c-- cbb cbc cbi cbk cbo cbw ccb ccc cci cck cco ccw ci- cib cic cii cik cio ciw ckb ckc cki cko ckw co- cob coc coi cok coo cow cw- cwb cwc cwi cwk cwo ibb ibc ibi ibk ibo ibw icb icc ici ick ico icw iib iic iii iio iiw ikb ikc iki ikk iko io- iob ioc ioi ioo iow iwb iwc iwi iwk iwo iww kbb kbc kbi kbk kbo kbw kcb kcc kci kck kib kic kii kik kio kkb kkc kki kkk kob koc koi kok koo kow kw- kwc kwi kwk kwo kww o-i ob- obb obc obi obk obo obw oc- ocb occ oci ock oco ocw oib oic oii oik oio okb okc oki okk oko okw oo- oob ooc ooi ook ooo oow owb owc owi owk owo oww wbb wbc wbi wbo wbw wcb wcc wci wck wco wcw wib wic wii wik wkb wkc wko wkw wob woc woi wok woo wow wwc wwi wwo www