-er c-- ccc ccd cce ccf cch cck cco ccr cdc cdd cde cdf cdh cdk cdo cdr ce- cec ced cee cef ceh cek ceo cer cfc cfd cfe cff cfh cfk cfo cfr ch- chc chd che chf chh chk cho chr ckc ckd ckh cko co- coc cod coe cof coh cok coo cor crc crd cre crf crh crk cro crr dcc dcd dce dcf dck dco dcr ddc ddd dde ddf ddh ddk ddo ddr de- dec ded dee def deh dek deo der dfc dfd dfe dff dfh dfk dfo dfr dh- dhc dhd dhe dhf dhh dhk dho dhr dkc dke dkk dko dkr doc dod doe dof doh dok doo dor drc drd dre drk dro drr ec- ecc ecd ece ecf ech eck eco ecr ed- edc edd ede edf edh edk edo edr eec eed eee eef eek eeo eer ef- efc efd efe eff efh efo efr ehc ehd ehe ehf ehh eho ehr ekc ekd eke ekf ekh eko ekr eo- eoc eod eoe eof eoh eok eoo eor erc erd ere erf erh erk ero err fcc fcd fce fcf fck fco fcr fdc fdd fde fdf fdh fdk fdo fdr fec fed fee fef feh fek feo fer ffc ffd ffe fff ffh ffk ffo ffr fhc fhe fhf fhh fho fhr fkc fkf fkk foc foe fof foh fok foo for frc frd fre frf frh frk fro frr hcc hcd hce hcf hch hck hco hcr hdc hdd hde hdf hdh hdk hdo hdr he- hec hed hee hef heh hek heo her hfc hfd hfe hff hfh hfk hfo hfr hhc hhd hhe hhf hhh hhk hho hhr hkd hkf hkh hkk hko hkr hoc hod hoe hof hoh hok hoo hor hr- hrc hrd hre hrf hrh hrk hro hrr kcc kcd kce kch kck kcr kdc kde kdf kdh kdk kdo kdr ke- kec ked kee kef keh kek keo ker kfc kfd kff kfh kfo khe khf khh khk kho khr kkc kke kkh kkk kkr koc kod koe kof koh kok koo kor krc krd krf krk kro krr oc- occ ocd ocf och ock oco ocr odc odd ode odf odh odo odr oec oed oee oef oeh oeo oer of- ofc ofd ofe off ofo ofr ohc ohd ohe ohf ohh oho ohr okc okd oke okk oko okr oo- ooc ood oof ooh ook ooo oor or- orc ord ore orf orh ork oro orr rcc rcd rce rcf rch rco rcr rdc rdd rde rdf rdh rdo rdr re- rec red ree ref reh rek reo rer rfc rfd rfe rff rfh rfk rfo rfr rh- rhc rhd rhe rhf rhh rho rhr rkc rke rkf rkk rko roc rod roe rof roh rok roo ror rrc rrd rrf rrh rrk rrr