-ic bbb bbc bbi bbk bbm bbn bcb bcc bci bck bcm bcn bi- bib bic bii bik bim bin bkb bkc bkk bkm bkn bmb bmc bmi bmk bmm bmn bnb bnc bni bnk bnn c-- cbb cbc cbi cbk cbm cbn ccb ccc cci cck ccm ccn ci- cib cic cii cik cim cin ckb ckc cki ckm cmb cmc cmi cmk cmm cmn cn- cnb cnc cni cnm cnn ibb ibc ibi ibk ibm ibn icb icc ici ick icm icn iib iic iii iim iin ikb ikc iki ikk im- imb imc imi imm imn in- inb inc ini ink inm inn kbb kbc kbi kbk kbm kbn kcb kcc kci kck kcm kcn kib kic kii kik kim kin kkb kkc kki kkk kkm kkn kmb kmc kmi kmk kmm kn- knc kni knk knm knn mbb mbc mbi mbk mbm mc- mcb mcc mci mck mcm mcn mi- mib mic mii mik mim min mkb mkc mkk mkm mkn mmb mmc mmi mmk mmm mmn mnb mnc mni mnk mnm mnn n-i nbb nbc nbi nbk nbm nbn ncb ncc nci nck ncm ncn nib nic nii nik nim nin nkc nki nkk nkm nkn nmb nmc nmi nmk nmm nmn nnb nnc nni nnk nnm nnn