-ic a-a a-b a-c a-i aaa aab aac aai aam aax ab- aba abb abc abi abm abx ac- aca acb acc aci acm acx ai- aia aib aic aii aim aix ama amb amc ami amm amx ax- axa axi axm axx baa bab bac bai bam bax bba bbb bbc bbi bbm bbx bca bcb bcc bci bcm bcx bi- bia bib bic bii bim bix bma bmb bmc bmi bmm bmx bxb bxi bxm bxx c-- caa cab cac cai cam cax cba cbb cbc cbi cbm cbx cca ccb ccc cci ccm ccx ci- cia cib cic cii cim cix cma cmb cmc cmi cmm cmx cxc cxi cxx ia- iaa iab iac iai iam iba ibb ibc ibi ibm ibx ica icb icc ici icm iia iib iic iii iim iix im- ima imb imc imi imm imx ixc ixi maa mab mac mai mam max mba mbb mbc mbi mbm mbx mc- mca mcb mcc mci mcm mcx mi- mia mib mic mii mim mix mma mmb mmc mmi mmm mmx mxa mxc mxi xaa xac xam xbc xbx xcb xci xcx xia xic xii xix xma xmc xmi xmm xmx xxi xxx