-er c-- ccc ccd cce ccf cch cck cco ccr ccs cdc cdd cde cdf cdh cdk cdo cdr cds ce- cec ced cee cef ceh cek ceo cer ces cfc cfd cfe cff cfh cfk cfo cfr cfs ch- chc chd che chf chh chk cho chr chs ckc ckd ckh cko cks co- coc cod coe cof coh cok coo cor cos crc crd cre crf crh crk cro crr crs csc csd cse csf csh csk cso csr css dcc dcd dce dcf dck dco dcr dcs ddc ddd dde ddf ddh ddk ddo ddr dds de- dec ded dee def deh dek deo der des dfc dfd dfe dff dfh dfk dfo dfr dfs dh- dhc dhd dhe dhf dhh dhk dho dhr dhs dkc dke dkk dko dkr dks doc dod doe dof doh dok doo dor dos drc drd dre drk dro drr drs dsc dsd dse dsf dsh dsk dso dsr dss ec- ecc ecd ece ecf ech eck eco ecr ecs ed- edc edd ede edf edh edk edo edr eds eec eed eee eef eek eeo eer ees ef- efc efd efe eff efh efo efr efs ehc ehd ehe ehf ehh eho ehr ehs ekc ekd eke ekf ekh eko ekr eks eo- eoc eod eoe eof eoh eok eoo eor eos erc erd ere erf erh erk ero err ers es- esc esd ese esf esh esk eso esr ess fcc fcd fce fcf fck fco fcr fcs fdc fdd fde fdf fdh fdk fdo fdr fds fec fed fee fef feh fek feo fer fes ffc ffd ffe fff ffh ffk ffo ffr ffs fhc fhe fhf fhh fho fhr fhs fkc fkf fkk foc foe fof foh fok foo for fos frc frd fre frf frh frk fro frr frs fsc fsd fse fsf fsh fsk fso fsr fss hcc hcd hce hcf hch hck hco hcr hcs hdc hdd hde hdf hdh hdk hdo hdr hds he- hec hed hee hef heh hek heo her hes hfc hfd hfe hff hfh hfk hfo hfr hfs hhc hhd hhe hhf hhh hhk hho hhr hhs hkd hkf hkh hkk hko hkr hks hoc hod hoe hof hoh hok hoo hor hos hr- hrc hrd hre hrf hrh hrk hro hrr hrs hsc hsd hse hsf hsh hsk hsr hss kcc kcd kce kch kck kcr kcs kdc kde kdf kdh kdk kdo kdr kds ke- kec ked kee kef keh kek keo ker kes kfc kfd kff kfh kfo kfs khe khf khh khk kho khr khs kkc kke kkh kkk kkr kks koc kod koe kof koh kok koo kor kos krc krd krf krk kro krr krs ksc ksd kse ksf ksh ksk kso ksr kss oc- occ ocd ocf och ock oco ocr ocs odc odd ode odf odh odo odr ods oec oed oee oef oeh oeo oer oes of- ofc ofd ofe off ofo ofr ofs ohc ohd ohe ohf ohh oho ohr ohs okc okd oke okk oko okr oks oo- ooc ood oof ooh ook ooo oor oos or- orc ord ore orf orh ork oro orr ors os- osc osd ose osf osh osk oso osr oss rcc rcd rce rcf rch rco rcr rcs rdc rdd rde rdf rdh rdo rdr rds re- rec red ree ref reh rek reo rer res rfc rfd rfe rff rfh rfk rfo rfr rfs rh- rhc rhd rhe rhf rhh rho rhr rhs rkc rke rkf rkk rko rks roc rod roe rof roh rok roo ror ros rrc rrd rrf rrh rrk rrr rrs rsc rsd rse rsf rsh rsk rso rsr rss scc scd sce scf sch sck sco scr scs sdc sdd sde sdf sdh sdk sdo sdr sds se- sec sed see sef seh sek seo ser ses sfc sfd sfe sff sfh sfk sfo sfr sfs sh- shc shd she shf shh shk sho shr shs sk- skc skd ske skf skh skk sko skr sks soc sod soe sof soh sok soo sor sos sr- src srd sre srf srh srk sro srr srs ss- ssc ssd sse ssf ssh ssk sso ssr sss