-er -ic -ol c-- ccc cce ccf cci ccl cco ccr ccs ce- cec cee cef cei cel ceo cer ces cfc cfe cff cfi cfl cfo cfr cfs ci- cic cie cif cii cil cio cir cis cl- clc cle clf cli cll clo clr cls co- coc coe cof coi col coo cor cos crc cre crf cri crl cro crr crs csc cse csf csi csl cso csr css ec- ecc ece ecf eci ecl eco ecr ecs eec eee eef eel eeo eer ees ef- efc efe eff efi efl efo efr efs eic eie eif eii eil eio eir eis elc ele elf eli ell elo elr els 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 fcc fce fcf fci fcl fco fcr fcs fec fee fef fei fel feo fer fes ffc ffe fff ffi ffl ffo ffr ffs fic fie fif fii fil fir fis flc fle flf fli fll flo flr fls foc foe fof foi fol foo for fos frc fre frf fri frl fro frr frs fsc fse fsf fsi fsl fso fsr fss i-f icc ice icf ici icl ico icr ics ie- iec iee ief iei iel ier ies ifc ife iff ifi ifl ifo ifr ifs iic iie iif iii iil iio iir iis il- ilc ile ilf ili ill ilo ilr ils io- ioc ioe iof ioi iol ioo ior ios ir- irc ire irf iri irl iro irr irs is- isc ise isf isi isl iso isr iss lcc lce lcf lci lcl lco lcr lcs lec lee lef lei lel leo ler les lfc lfe lff lfi lfl lfo lfr lfs lic lie lif lii lil lio lir lis llc lle llf lli lll llo llr lls loc loe lof loi lol loo lor los lrc lrf lri lro lrr lrs lsc lse lsf lsi lsl lso lsr lss o-i oc- occ ocf oci ocl oco ocr ocs oec oee oef oei oel oeo oer oes of- ofc ofe off ofi ofl ofo ofr ofs oic oie oif oii oil oio oir ois olc ole olf oli oll olo ols oo- ooc oof ooi ool ooo oor oos or- orc ore orf ori orl oro orr ors os- osc ose osf osi osl oso osr oss rcc rce rcf rci rcl rco rcr rcs re- rec ree ref rei rel reo rer res rfc rfe rff rfi rfl rfo rfr rfs ric rie rif rii ril rio rir ris rlc rle rlf rli rll rlo rlr rls roc roe rof roi rol roo ror ros rrc rrf rri rrl rrr rrs rsc rse rsf rsi rsl rso rsr rss scc sce scf sci scl sco scr scs se- sec see sef sei sel seo ser ses sfc sfe sff sfi sfl sfo sfr sfs sic sie sif sii sil sio sir sis slc sle slf sli sll slo slr sls soc soe sof soi sol soo sor sos sr- src sre srf sri srl sro srr srs ss- ssc sse ssf ssi ssl sso ssr sss