-er c-- c-j ccc ccd cce ccf ccj cco ccr ccs cct cdc cdd cde cdf cdj cdo cdr cds cdt ce- cec ced cee cef cej ceo cer ces cet cfc cfd cfe cff cfo cfr cfs cft cjc cjd cjf cjr cjs co- coc cod coe cof coj coo cor cos cot crc crd cre crf crj cro crr crs crt csc csd cse csf csj cso csr css cst ctc ctd cte ctf cto ctr cts ctt dcc dcd dce dcf dco dcr dcs dct ddc ddd dde ddf ddo ddr dds ddt de- dec ded dee def dej deo der des det dfc dfd dfe dff dfj dfo dfr dfs dft dj- djc djd dje djf djo djs djt doc dod doe dof doj doo dor dos dot drc drd dre drj dro drr drs drt dsc dsd dse dsf dsj dso dsr dss dst dtc dtd dte dtf dtj dto dtr dts dtt ec- ecc ecd ece ecf ecj eco ecr ecs ect ed- edc edd ede edf edj edo edr eds edt eec eed eee eef eeo eer ees eet ef- efc efd efe eff efo efr efs eft ejc ejd ejf ejo ejt eo- eoc eod eoe eof eoo eor eos eot erc erd ere erf ero err ers ert es- esc esd ese esf eso esr ess est etc etd ete etf etj eto etr ets ett fcc fcd fce fcf fcj fco fcr fcs fct fdc fdd fde fdf fdj fdo fdr fds fdt fec fed fee fef feo fer fes fet ffc ffd ffe fff ffo ffr ffs fft fjc fjd fjs foc foe fof foo for fos fot frc frd fre frf frj fro frr frs frt fsc fsd fse fsf fsj fso fsr fss fst ftc ftd fte ftf fto ftr fts ftt j-d jcc jcd jce jcf jco jcr jcs jct jdc jde jdf jdo jdr jds jdt jec jed jee jef jej jeo jer jes jet jfc jfd jfe jff jfj jfo jfr jfs jft jjc jjf jjj jjr jjs joc jod joe jof joj joo jor jos jot jrc jrf jro jrr jrs jrt jsc jsd jse jsf jsj jso jsr jss jst jtc jte jtf jtr jts jtt oc- occ ocd ocf ocj oco ocr ocs oct odc odd ode odf odo odr ods odt oec oed oee oef oeo oer oes oet of- ofc ofd ofe off ofo ofr ofs oft ojc ojd oje ojo ojs oo- ooc ood oof ooo oor oos oot or- orc ord ore orf oro orr ors ort os- osc osd ose osf osj oso osr oss ost ot- otc otd ote otf oto otr ots ott rcc rcd rce rcf rcj rco rcr rcs rct rdc rdd rde rdf rdj rdo rdr rds rdt re- rec red ree ref reo rer res ret rfc rfd rfe rff rfj rfo rfr rfs rft rjc rjf rjr roc rod roe rof roj roo ror ros rot rrc rrd rrf rrr rrs rrt rsc rsd rse rsf rsj rso rsr rss rst rtc rtd rte rtf rtj rto rtr rts rtt scc scd sce scf scj sco scr scs sct sdc sdd sde sdf sdj sdo sdr sds sdt se- sec sed see sef sej seo ser ses set sfc sfd sfe sff sfj sfo sfr sfs sft sjc sjd sje sjf sjj sjr sjs sjt soc sod soe sof soj soo sor sos sot sr- src srd sre srf srj sro srr srs srt ss- ssc ssd sse ssf ssj sso ssr sss sst stc std ste stf stj sto str sts stt tcc tcd tce tcf tcj tco tcr tcs tct tdc tdd tde tdf tdo tdr tds tdt te- tec ted tee tef tej teo ter tes tet tfc tfd tfe tff tfj tfo tfr tfs tft tjc tjd tje tjf tjo tjr tjs to- toc tod toe tof toj too tor tos tot trc trd tre trf tro trr trs trt tsc tsd tse tsf tsj tso tsr tss tst ttc ttd tte ttf tto ttr tts ttt