-er -ic c-- ccc cce ccf cci cco ccp ccr ccs cct ce- cec cee cef cei ceo cep cer ces cet cfc cfe cff cfi cfo cfp cfr cfs cft ci- cic cie cif cii cio cip cir cis cit co- coc coe cof coi coo cop cor cos cot cpc cpe cpf cpi cpo cpp cpr cps cpt crc cre crf cri cro crp crr crs crt csc cse csf csi cso csp csr css cst ctc cte ctf cti cto ctp ctr cts ctt ec- ecc ece ecf eci eco ecr ecs ect eec eee eef eeo eep eer ees eet ef- efc efe eff efi efo efp efr efs eft eic eie eif eii eio eip eir eis eit eo- eoc eoe eof eoi eoo eop eor eos eot ep- epc epe epf epi epo epp epr eps ept erc ere erf eri ero erp err ers ert es- esc ese esf esi eso esp esr ess est etc ete etf eti eto etp etr ets ett fcc fce fcf fci fco fcp fcr fcs fct fec fee fef fei feo fep fer fes fet ffc ffe fff ffi ffo ffp ffr ffs fft fic fie fif fii fip fir fis fit foc foe fof foi foo fop for fos fot fpc fpe fpi fpo fpp fpr fps fpt frc fre frf fri fro frp frr frs frt fsc fse fsf fsi fso fsp fsr fss fst ftc fte ftf fti fto ftp ftr fts ftt i-f icc ice icf ici ico icp icr ics ict ie- iec iee ief iei iep ier ies iet ifc ife iff ifi ifo ifp ifr ifs ift iic iie iif iii iio iip iir iis iit io- ioc ioe iof ioi ioo iop ior ios iot ipc ipe ipf ipi ipo ipp ipr ips ipt ir- irc ire irf iri iro irp irr irs irt is- isc ise isf isi iso isp isr iss ist itc ite itf iti ito itp its itt o-i oc- occ ocf oci oco ocp ocr ocs oct oec oee oef oei oeo oep oer oes oet of- ofc ofe off ofi ofo ofp ofr ofs oft oic oie oif oii oio oip oir ois oit oo- ooc oof ooi ooo oop oor oos oot op- opc ope opf opi opo opp opr ops opt or- orc ore orf ori oro orp orr ors ort os- osc ose osf osi oso osp osr oss ost ot- otc ote otf oti oto otp otr ots ott p-p pcc pce pcf pci pco pcp pcr pcs pct pec pee pef pei peo pep per pes pet pfc pfe pff pfi pfo pfp pfr pfs pft pic pie pif pii pio pip pir pis pit poc poe pof poi poo pop por pos pot ppc ppe ppf ppi ppo ppp ppr pps ppt prc pre prf pri pro prp prr prs prt ps- psc pse psf psi pso psp psr pss pst pt- ptc pte ptf pti pto ptp ptr pts ptt rcc rce rcf rci rco rcp rcr rcs rct re- rec ree ref rei reo rep rer res ret rfc rfe rff rfi rfo rfp rfr rfs rft ric rie rif rii rio rip rir ris rit roc roe rof roi roo rop ror ros rot rpc rpe rpf rpi rpo rpp rpr rps rpt rrc rrf rri rrp rrr rrs rrt rsc rse rsf rsi rso rsp rsr rss rst rtc rte rtf rti rto rtp rtr rts rtt scc sce scf sci sco scp scr scs sct se- sec see sef sei seo sep ser ses set sfc sfe sff sfi sfo sfp sfr sfs sft sic sie sif sii sio sip sir sis sit soc soe sof soi soo sop sor sos sot spc spe spf spi spo spp spr sps spt sr- src sre srf sri sro srp srr srs srt ss- ssc sse ssf ssi sso ssp ssr sss sst stc ste stf sti sto stp str sts stt tcc tce tcf tci tco tcp tcr tcs tct te- tec tee tef tei teo tep ter tes tet tfc tfe tff tfi tfo tfp tfr tfs tft tic tie tif tii tio tip tir tis tit to- toc toe tof toi too top tor tos tot tpc tpe tpf tpi tpo tpp tpr tps tpt trc tre trf tri tro trp trr trs trt tsc tse tsf tsi tso tsp tsr tss tst ttc tte ttf tti tto ttp ttr tts ttt