-ic bbb bbc bbi bbm bbn bcb bcc bci bcm bcn bi- bib bic bii bim bin bmb bmc bmi bmm bmn bnb bnc bni bnn c-- cbb cbc cbi cbm cbn ccb ccc cci ccm ccn ci- cib cic cii cim cin cmb cmc cmi cmm cmn cn- cnb cnc cni cnm cnn ibb ibc ibi ibm ibn icb icc ici icm icn iib iic iii iim iin im- imb imc imi imm imn in- inb inc ini inm inn mbb mbc mbi mbm mc- mcb mcc mci mcm mcn mi- mib mic mii mim min mmb mmc mmi mmm mmn mnb mnc mni mnm mnn n-i nbb nbc nbi nbm nbn ncb ncc nci ncm ncn nib nic nii nim nin nmb nmc nmi nmm nmn nnb nnc nni nnm nnn