-ic b-u bbb bbc bbi bbl bbm bbn bbu bcb bcc bci bcl bcm bcn bcu bi- bib bic bii bil bim bin biu blb blc bli bll blm bln blu bmb bmc bmi bml bmm bmn bmu bnb bnc bni bnl bnn bnu bub buc bui bul bum bun buu c-- cbb cbc cbi cbl cbm cbn cbu ccb ccc cci ccl ccm ccn ccu ci- cib cic cii cil cim cin ciu cl- clb clc cli cll clm cln clu cmb cmc cmi cml cmm cmn cmu cn- cnb cnc cni cnl cnm cnn cnu cub cuc cui cul cum cun cuu ibb ibc ibi ibl ibm ibn ibu icb icc ici icl icm icn icu iib iic iii iil iim iin iiu il- ilb ilc ili ill ilm iln ilu im- imb imc imi iml imm imn imu in- inb inc ini inl inm inn inu iu- iub iuc iui ium lbb lbc lbi lbl lbm lbu lcb lcc lci lcl lcm lcn lcu lib lic lii lil lim lin liu llb llc lli lll llm lln llu lmb lmc lmi lml lmm lmn lmu lnb lnc lni lnl lnm lnn lnu lub luc lui lul lum lun luu mbb mbc mbi mbl mbm mbu mc- mcb mcc mci mcl mcm mcn mcu mi- mib mic mii mil mim min miu mlb mlc mli mll mlm mln mlu mmb mmc mmi mml mmm mmn mmu mnb mnc mni mnl mnm mnn mnu mub muc mui mul mum mun muu n-i nbb nbc nbi nbl nbm nbn nbu ncb ncc nci ncl ncm ncn ncu nib nic nii nil nim nin niu nlb nlc nli nll nlm nln nlu nmb nmc nmi nml nmm nmn nmu nnb nnc nni nnl nnm nnn nnu nub nuc nui nul num nun nuu ubb ubc ubi ubl ubn ubu ucb ucc uci ucl ucm ucn ucu uib uic uii uil uim uin uiu ulb ulc uli ull ulm uln ulu um- umb umc umi uml umm umn umu un- unb unc uni unl unm unn unu uuc uum uun uuu