-er c-- ccc ccd cce ccf cck cco ccp ccr ccs cct cdc cdd cde cdf cdk cdo cdp cdr cds cdt ce- cec ced cee cef cek ceo cep cer ces cet cfc cfd cfe cff cfk cfo cfp cfr cfs cft ckc ckd cko cks ckt co- coc cod coe cof cok coo cop cor cos cot cpc cpd cpe cpf cpk cpo cpp cpr cps cpt crc crd cre crf crk cro crp crr crs crt csc csd cse csf csk cso csp csr css cst ctc ctd cte ctf ctk cto ctp ctr cts ctt dcc dcd dce dcf dck dco dcp dcr dcs dct ddc ddd dde ddf ddk ddo ddp ddr dds ddt de- dec ded dee def dek deo dep der des det dfc dfd dfe dff dfk dfo dfp dfr dfs dft dkc dke dkk dko dkp dkr dks dkt doc dod doe dof dok doo dop dor dos dot dpc dpd dpe dpf dpk dpo dpp dpr dps dpt drc drd dre drk dro drp drr drs drt dsc dsd dse dsf dsk dso dsp dsr dss dst dtc dtd dte dtf dtk dto dtp dtr dts dtt ec- ecc ecd ece ecf eck eco ecr ecs ect ed- edc edd ede edf edk edo edp edr eds edt eec eed eee eef eek eeo eep eer ees eet ef- efc efd efe eff efo efp efr efs eft ekc ekd eke ekf eko ekp ekr eks ekt eo- eoc eod eoe eof eok eoo eop eor eos eot ep- epc epd epe epf epo epp epr eps ept erc erd ere erf erk ero erp err ers ert es- esc esd ese esf esk eso esp esr ess est etc etd ete etf etk eto etp etr ets ett fcc fcd fce fcf fck fco fcp fcr fcs fct fdc fdd fde fdf fdk fdo fdp fdr fds fdt fec fed fee fef fek feo fep fer fes fet ffc ffd ffe fff ffk ffo ffp ffr ffs fft fkc fkf fkk fkp fkt foc foe fof fok foo fop for fos fot fpc fpd fpe fpk fpo fpp fpr fps fpt frc frd fre frf frk fro frp frr frs frt fsc fsd fse fsf fsk fso fsp fsr fss fst ftc ftd fte ftf ftk fto ftp ftr fts ftt k-t kcc kcd kce kck kcp kcr kcs kct kdc kde kdf kdk kdo kdp kdr kds kdt ke- kec ked kee kef kek keo kep ker kes ket kfc kfd kff kfo kfs kkc kke kkk kkp kkr kks kkt koc kod koe kof kok koo kop kor kos kot kpc kpd kpe kpf kpk kpo kpp kpr kps kpt krc krd krf krk kro krp krr krs krt ksc ksd kse ksf ksk kso ksp ksr kss kst ktc kte ktf ktk kto ktp ktr kts ktt oc- occ ocd ocf ock oco ocp ocr ocs oct odc odd ode odf odo odp odr ods odt oec oed oee oef oeo oep oer oes oet of- ofc ofd ofe off ofo ofp ofr ofs oft okc okd oke okk oko okp okr oks oo- ooc ood oof ook ooo oop oor oos oot op- opc opd ope opf opk opo opp opr ops opt or- orc ord ore orf ork oro orp orr ors ort os- osc osd ose osf osk oso osp osr oss ost ot- otc otd ote otf otk oto otp otr ots ott p-p pcc pcd pce pcf pck pco pcp pcr pcs pct pdc pdd pde pdf pdk pdo pdp pdr pds pdt pec ped pee pef pek peo pep per pes pet pfc pfd pfe pff pfk pfo pfp pfr pfs pft pkc pkd pke pkf pko pkp pkr pks pkt poc pod poe pof pok poo pop por pos pot ppc ppd ppe ppf ppk ppo ppp ppr pps ppt prc prd pre prf prk pro prp prr prs prt ps- psc psd pse psf psk pso psp psr pss pst pt- ptc ptd pte ptf ptk pto ptp ptr pts ptt rcc rcd rce rcf rco rcp rcr rcs rct rdc rdd rde rdf rdo rdp rdr rds rdt re- rec red ree ref rek reo rep rer res ret rfc rfd rfe rff rfk rfo rfp rfr rfs rft rkc rke rkf rkk rko rkp rks rkt roc rod roe rof rok roo rop ror ros rot rpc rpd rpe rpf rpk rpo rpp rpr rps rpt rrc rrd rrf rrk rrp rrr rrs rrt rsc rsd rse rsf rsk rso rsp rsr rss rst rtc rtd rte rtf rtk rto rtp rtr rts rtt scc scd sce scf sck sco scp scr scs sct sdc sdd sde sdf sdk sdo sdp sdr sds sdt se- sec sed see sef sek seo sep ser ses set sfc sfd sfe sff sfk sfo sfp sfr sfs sft sk- skc skd ske skf skk sko skp skr sks skt soc sod soe sof sok soo sop sor sos sot spc spd spe spf spk spo spp spr sps spt sr- src srd sre srf srk sro srp srr srs srt ss- ssc ssd sse ssf ssk sso ssp ssr sss sst stc std ste stf stk sto stp str sts stt tcc tcd tce tcf tck tco tcp tcr tcs tct tdc tdd tde tdf tdk tdo tdp tdr tds tdt te- tec ted tee tef tek teo tep ter tes tet tfc tfd tfe tff tfk tfo tfp tfr tfs tft tkc tke tkk tko tkp tkr tks tkt to- toc tod toe tof tok too top tor tos tot tpc tpd tpe tpf tpk tpo tpp tpr tps tpt trc trd tre trf trk tro trp trr trs trt tsc tsd tse tsf tsk tso tsp tsr tss tst ttc ttd tte ttf ttk tto ttp ttr tts ttt