-ic b-u bbb bbc bbi bbl bbn bbu bcb bcc bci bcl bcn bcu bi- bib bic bii bil bin biu blb blc bli bll bln blu bnb bnc bni bnl bnn bnu bub buc bui bul bun buu c-- cbb cbc cbi cbl cbn cbu ccb ccc cci ccl ccn ccu ci- cib cic cii cil cin ciu cl- clb clc cli cll cln clu cn- cnb cnc cni cnl cnn cnu cub cuc cui cul cun cuu ibb ibc ibi ibl ibn ibu icb icc ici icl icn icu iib iic iii iil iin iiu il- ilb ilc ili ill iln ilu in- inb inc ini inl inn inu iu- iub iuc iui lbb lbc lbi lbl lbu lcb lcc lci lcl lcn lcu lib lic lii lil lin liu llb llc lli lll lln llu lnb lnc lni lnl lnn lnu lub luc lui lul lun luu n-i nbb nbc nbi nbl nbn nbu ncb ncc nci ncl ncn ncu nib nic nii nil nin niu nlb nlc nli nll nln nlu nnb nnc nni nnl nnn nnu nub nuc nui nul nun nuu ubb ubc ubi ubl ubn ubu ucb ucc uci ucl ucn ucu uib uic uii uil uin uiu ulb ulc uli ull uln ulu un- unb unc uni unl unn unu uuc uun uuu