-ic c-- ccc cce cci ccm cct ccx ce- cec cee cei cem cet cex ci- cic cie cii cim cit cix cmc cme cmi cmm cmt cmx ctc cte cti ctm ctt ctx cxc cxi cxt cxx ec- ecc ece eci ecm ect ecx eec eee eem eet eex eic eie eii eim eit eix em- emc eme emi emm emt emx etc ete eti etm ett etx ex- exc exe exi ext exx icc ice ici icm ict ie- iec iee iei iem iet iex iic iie iii iim iit iix im- imc ime imi imm imt imx itc ite iti itm itt itx ixc ixe ixi mc- mcc mce mci mcm mct mcx mec mee mei mem met mex mi- mic mie mii mim mit mix mmc mme mmi mmm mmt mmx mtc mte mti mtm mtt mtx mxc mxi t-x tcc tce tci tcm tct tcx te- tec tee tei tem tet tex tic tie tii tim tit tix tmc tme tmi tmm tmt tmx ttc tte tti ttm ttt ttx txe txi txt xci xcx xee xem xet xex xic xie xii xit xix xmc xmi xmm xmt xmx xtc xti xtm xtx xxi xxx