-er -ic -ol c-- ccc cce ccf cci ccl cco ccr ccs ccx ce- cec cee cef cei cel ceo cer ces cex cfc cfe cff cfi cfl cfo cfr cfs cfx ci- cic cie cif cii cil cio cir cis cix cl- clc cle clf cli cll clo clr cls clx co- coc coe cof coi col coo cor cos cox crc cre crf cri crl cro crr crs crx csc cse csf csi csl cso csr css csx cxc cxf cxi cxl cxo cxr cxs cxx ec- ecc ece ecf eci ecl eco ecr ecs ecx eec eee eef eel eeo eer ees eex ef- efc efe eff efi efl efo efr efs efx eic eie eif eii eil eio eir eis eix elc ele elf eli ell elo elr els elx eo- eoc eoe eof eoi eol eoo eor eos erc ere erf eri erl ero err ers es- esc ese esf esi esl eso esr ess esx ex- exc exe exi exl exo exr exs exx fcc fce fcf fci fcl fco fcr fcs fcx fec fee fef fei fel feo fer fes fex ffc ffe fff ffi ffl ffo ffr ffs ffx fic fie fif fii fil fir fis fix flc fle flf fli fll flo flr fls flx foc foe fof foi fol foo for fos fox frc fre frf fri frl fro frr frs fsc fse fsf fsi fsl fso fsr fss fsx fxe fxi fxr fxs fxx i-f icc ice icf ici icl ico icr ics ie- iec iee ief iei iel ier ies iex ifc ife iff ifi ifl ifo ifr ifs ifx iic iie iif iii iil iio iir iis iix il- ilc ile ilf ili ill ilo ilr ils ilx io- ioc ioe iof ioi iol ioo ior ios ir- irc ire irf iri irl iro irr irs irx is- isc ise isf isi isl iso isr iss ixc ixe ixi ixl lcc lce lcf lci lcl lco lcr lcs lcx lec lee lef lei lel leo ler les lex lfc lfe lff lfi lfl lfo lfr lfs lfx lic lie lif lii lil lio lir lis lix llc lle llf lli lll llo llr lls loc loe lof loi lol loo lor los lox lrc lrf lri lro lrr lrs lsc lse lsf lsi lsl lso lsr lss lxc lxi lxo lxr lxx o-i oc- occ ocf oci ocl oco ocr ocs ocx oec oee oef oei oel oeo oer oes oex of- ofc ofe off ofi ofl ofo ofr ofs ofx oic oie oif oii oil oio oir ois olc ole olf oli oll olo ols oo- ooc oof ooi ool ooo oor oos oox or- orc ore orf ori orl oro orr ors orx os- osc ose osf osi osl oso osr oss osx ox- oxc oxf oxi oxo oxx rcc rce rcf rci rcl rco rcr rcs rcx re- rec ree ref rei rel reo rer res rex rfc rfe rff rfi rfl rfo rfr rfs ric rie rif rii ril rio rir ris rix rlc rle rlf rli rll rlo rlr rls roc roe rof roi rol roo ror ros rox rrc rrf rri rrl rrr rrs rsc rse rsf rsi rsl rso rsr rss rsx rxr rxs scc sce scf sci scl sco scr scs scx se- sec see sef sei sel seo ser ses sex sfc sfe sff sfi sfl sfo sfr sfs sfx sic sie sif sii sil sio sir sis six slc sle slf sli sll slo slr sls slx soc soe sof soi sol soo sor sos sox sr- src sre srf sri srl sro srr srs srx ss- ssc sse ssf ssi ssl sso ssr sss ssx sxc sxi sxl sxs xcf xci xcl xcr xcx xee xel xer xes xex xfe xfl xfs xfx xic xie xii xio xis xix xlf xli xlr xls xoc xof xoi xoo xor xos xox xrc xrf xrx xsc xsi xsl xss xxi xxl xxo xxx