-ic b-u bbb bbc bbi bbk bbl bbu bcb bcc bci bck bcl bcu bi- bib bic bii bik bil biu bkb bkc bkk bkl blb blc bli blk bll blu bub buc bui buk bul buu c-- cbb cbc cbi cbk cbl cbu ccb ccc cci cck ccl ccu ci- cib cic cii cik cil ciu ckb ckc cki cl- clb clc cli clk cll clu cub cuc cui cuk cul cuu ibb ibc ibi ibk ibl ibu icb icc ici ick icl icu iib iic iii iil iiu ikb ikc iki ikk ikl iku il- ilb ilc ili ilk ill ilu iu- iub iuc iui kbb kbc kbi kbk kbl kbu kcb kcc kci kck kcl kcu kib kic kii kik kil kiu kkb kkc kki kkk kkl kku kl- klb klc kli klu kub kuc kui kuk kul kuu lbb lbc lbi lbk lbl lbu lcb lcc lci lck lcl lcu lib lic lii lik lil liu lkb lkl llb llc lli llk lll llu lub luc lui luk lul luu ubb ubc ubi ubk ubl ubu ucb ucc uci uck ucl ucu uib uic uii uil uiu ukb ukc uki ukk ukl uku ulb ulc uli ulk ull ulu uuc uuu