-ic bbb bbc bbi bbl bbm bbn bcb bcc bci bcl bcm bcn bi- bib bic bii bil bim bin blb blc bli bll blm bln bmb bmc bmi bml bmm bmn bnb bnc bni bnl bnn c-- cbb cbc cbi cbl cbm cbn ccb ccc cci ccl ccm ccn ci- cib cic cii cil cim cin cl- clb clc cli cll clm cln cmb cmc cmi cml cmm cmn cn- cnb cnc cni cnl cnm cnn ibb ibc ibi ibl ibm ibn icb icc ici icl icm icn iib iic iii iil iim iin il- ilb ilc ili ill ilm iln im- imb imc imi iml imm imn in- inb inc ini inl inm inn lbb lbc lbi lbl lbm lcb lcc lci lcl lcm lcn lib lic lii lil lim lin llb llc lli lll llm lln lmb lmc lmi lml lmm lmn lnb lnc lni lnl lnm lnn mbb mbc mbi mbl mbm mc- mcb mcc mci mcl mcm mcn mi- mib mic mii mil mim min mlb mlc mli mll mlm mln mmb mmc mmi mml mmm mmn mnb mnc mni mnl mnm mnn n-i nbb nbc nbi nbl nbm nbn ncb ncc nci ncl ncm ncn nib nic nii nil nim nin nlb nlc nli nll nlm nln nmb nmc nmi nml nmm nmn nnb nnc nni nnl nnm nnn