-ic c-- ccc cce ccf cci cck ccm ccs cct ccx ce- cec cee cef cei cek cem ces cet cex cfc cfe cff cfi cfk cfm cfs cft cfx ci- cic cie cif cii cik cim cis cit cix ckc cki ckm cks ckt ckx cmc cme cmf cmi cmk cmm cms cmt cmx csc cse csf csi csk csm css cst csx ctc cte ctf cti ctk ctm cts ctt ctx cxc cxf cxi cxk cxs cxt cxx ec- ecc ece ecf eci eck ecm ecs ect ecx eec eee eef eek eem ees eet eex ef- efc efe eff efi efm efs eft efx eic eie eif eii eik eim eis eit eix ekc eke ekf eki eks ekt em- emc eme emf emi emk emm ems emt emx es- esc ese esf esi esk esm ess est esx etc ete etf eti etk etm ets ett etx ex- exc exe exi exs ext exx fcc fce fcf fci fck fcm fcs fct fcx fec fee fef fei fek fem fes fet fex ffc ffe fff ffi ffk ffm ffs fft ffx fic fie fif fii fik fim fis fit fix fkc fkf fki fkk fkm fkt fmc fme fmf fmi fmm fms fmt fmx fsc fse fsf fsi fsk fsm fss fst fsx ftc fte ftf fti ftk ftm fts ftt ftx fxe fxi fxm fxs fxt fxx i-f icc ice icf ici ick icm ics ict ie- iec iee ief iei iek iem ies iet iex ifc ife iff ifi ifm ifs ift ifx iic iie iif iii iim iis iit iix ikc ike ikf iki ikk iks ikt ikx im- imc ime imf imi imm ims imt imx is- isc ise isf isi isk ism iss ist itc ite itf iti itk itm its itt itx ixc ixe ixi k-t kcc kce kci kck kcm kcs kct kcx ke- kec kee kef kei kek kem kes ket kex kfc kff kfi kfm kfs kfx kic kie kif kii kik kim kis kit kix kkc kke kki kkk kkm kks kkt kmc kme kmf kmi kmk kmm kms kmt ksc kse ksf ksi ksk ksm kss kst ktc kte ktf ktk ktm kts ktt kxm m-f mc- mcc mce mcf mci mck mcm mcs mct mcx mec mee mef mei mek mem mes met mex mfc mfe mff mfi mfm mfs mft mi- mic mie mif mii mik mim mis mit mix mkc mke mkk mkm mks mkt mkx mmc mme mmf mmi mmk mmm mms mmt mmx msc mse msf msi msk msm mss mst msx mtc mte mtf mti mtk mtm mts mtt mtx mxc mxi mxs scc sce scf sci sck scm scs sct scx se- sec see sef sei sek sem ses set sex sfc sfe sff sfi sfk sfm sfs sft sfx sic sie sif sii sik sim sis sit six sk- skc ske skf ski skk skm sks skt skx smc sme smf smi smk smm sms smt smx ss- ssc sse ssf ssi ssk ssm sss sst ssx stc ste stf sti stk stm sts stt stx sxc sxi sxm sxs sxt t-x tcc tce tcf tci tck tcm tcs tct tcx te- tec tee tef tei tek tem tes tet tex tfc tfe tff tfi tfk tfm tfs tft tfx tic tie tif tii tik tim tis tit tix tkc tke tkk tkm tks tkt tmc tme tmf tmi tmk tmm tms tmt tmx tsc tse tsf tsi tsk tsm tss tst tsx ttc tte ttf tti ttk ttm tts ttt ttx txe txf txi txk txs txt xcf xci xcx xee xem xes xet xex xfe xfm xfs xft xfx xic xie xii xis xit xix xke xks xmc xmf xmi xmk xmm xms xmt xmx xsc xsi xsm xss xst xtc xtf xti xtm xts xtx xxi xxx