-ic a-a a-b a-c a-i aaa aab aac aad aae aai aam aax ab- aba abb abc abd abe abi abm abx ac- aca acb acc acd ace aci acm acx ad- ada adb adc add ade adi adm adx aea aeb aec aed aee aei aem aex ai- aia aib aic aid aie aii aim aix ama amb amc amd ame ami amm amx ax- axa axe axi axm axx baa bab bac bad bae bai bam bax bba bbb bbc bbd bbe bbi bbm bbx bca bcb bcc bcd bce bci bcm bcx bda bdb bdc bdd bde bdi bdm bdx be- bea beb bec bed bee bei bem bex bi- bia bib bic bid bie bii bim bix bma bmb bmc bmd bme bmi bmm bmx bxb bxd bxi bxm bxx c-- caa cab cac cad cae cai cam cax cba cbb cbc cbd cbe cbi cbm cbx cca ccb ccc ccd cce cci ccm ccx cda cdb cdc cdd cde cdi cdm cdx ce- cea ceb cec ced cee cei cem cex ci- cia cib cic cid cie cii cim cix cma cmb cmc cmd cme cmi cmm cmx cxc cxi cxx daa dab dac dad dae dai dam dax dba dbb dbc dbd dbe dbi dbm dbx dca dcb dcc dcd dce dci dcm dcx dda ddb ddc ddd dde ddi ddm ddx de- dea deb dec ded dee dei dem dex di- dia dib dic did die dii dim dix dma dmb dmc dmd dme dmi dmm dmx dxc dxd dxi dxx eaa eab eac ead eae eai eam eax eba ebb ebc ebd ebe ebi ebm ebx ec- eca ecb ecc ecd ece eci ecm ecx ed- eda edb edc edd ede edi edm edx eea eeb eec eed eee eem eex eia eib eic eid eie eii eim eix em- ema emb emc emd eme emi emm emx ex- exa exc exd exe exi exx i-d ia- iaa iab iac iad iae iai iam iba ibb ibc ibd ibe ibi ibm ibx ica icb icc icd ice ici icm ida idb idc idd ide idi idm idx ie- iea iec ied iee iei iem iex iia iib iic iid iie iii iim iix im- ima imb imc imd ime imi imm imx ixc ixe ixi maa mab mac mad mae mai mam max mba mbb mbc mbd mbe mbi mbm mbx mc- mca mcb mcc mcd mce mci mcm mcx mda mdb mdc mdd mde mdi mdm mdx mea meb mec med mee mei mem mex mi- mia mib mic mid mie mii mim mix mma mmb mmc mmd mme mmi mmm mmx mxa mxc mxd mxi xaa xac xad xam xbc xbe xbx xcb xcd xci xcx xda xdb xdc xde xdi xdm xed xee xem xex xia xic xie xii xix xma xmc xmd xmi xmm xmx xxi xxx