-er -ic -ol c-- ccc cce ccf cci ccl cco ccr ccx ce- cec cee cef cei cel ceo cer cex cfc cfe cff cfi cfl cfo cfr cfx ci- cic cie cif cii cil cio cir cix cl- clc cle clf cli cll clo clr clx co- coc coe cof coi col coo cor cox crc cre crf cri crl cro crr crx cxc cxf cxi cxl cxo cxr cxx ec- ecc ece ecf eci ecl eco ecr ecx eec eee eef eel eeo eer eex ef- efc efe eff efi efl efo efr efx eic eie eif eii eil eio eir eix elc ele elf eli ell elo elr elx eo- eoc eoe eof eoi eol eoo eor erc ere erf eri erl ero err ex- exc exe exi exl exo exr exx fcc fce fcf fci fcl fco fcr fcx fec fee fef fei fel feo fer fex ffc ffe fff ffi ffl ffo ffr ffx fic fie fif fii fil fir fix flc fle flf fli fll flo flr flx foc foe fof foi fol foo for fox frc fre frf fri frl fro frr fxe fxi fxr fxx i-f icc ice icf ici icl ico icr ie- iec iee ief iei iel ier iex ifc ife iff ifi ifl ifo ifr ifx iic iie iif iii iil iio iir iix il- ilc ile ilf ili ill ilo ilr ilx io- ioc ioe iof ioi iol ioo ior ir- irc ire irf iri irl iro irr irx ixc ixe ixi ixl lcc lce lcf lci lcl lco lcr lcx lec lee lef lei lel leo ler lex lfc lfe lff lfi lfl lfo lfr lfx lic lie lif lii lil lio lir lix llc lle llf lli lll llo llr loc loe lof loi lol loo lor lox lrc lrf lri lro lrr lxc lxi lxo lxr lxx o-i oc- occ ocf oci ocl oco ocr ocx oec oee oef oei oel oeo oer oex of- ofc ofe off ofi ofl ofo ofr ofx oic oie oif oii oil oio oir olc ole olf oli oll olo oo- ooc oof ooi ool ooo oor oox or- orc ore orf ori orl oro orr orx ox- oxc oxf oxi oxo oxx rcc rce rcf rci rcl rco rcr rcx re- rec ree ref rei rel reo rer rex rfc rfe rff rfi rfl rfo rfr ric rie rif rii ril rio rir rix rlc rle rlf rli rll rlo rlr roc roe rof roi rol roo ror rox rrc rrf rri rrl rrr rxr xcf xci xcl xcr xcx xee xel xer xex xfe xfl xfx xic xie xii xio xix xlf xli xlr xoc xof xoi xoo xor xox xrc xrf xrx xxi xxl xxo xxx