-er c-- ccc ccd cce ccf ccm cco ccr ccs cdc cdd cde cdf cdm cdo cdr cds ce- cec ced cee cef cem ceo cer ces cfc cfd cfe cff cfm cfo cfr cfs cmc cmd cme cmf cmm cmo cmr cms co- coc cod coe cof com coo cor cos crc crd cre crf crm cro crr crs csc csd cse csf csm cso csr css dcc dcd dce dcf dcm dco dcr dcs ddc ddd dde ddf ddm ddo ddr dds de- dec ded dee def dem deo der des dfc dfd dfe dff dfm dfo dfr dfs dmc dmd dme dmf dmm dmo dmr dms doc dod doe dof dom doo dor dos drc drd dre drm dro drr drs dsc dsd dse dsf dsm dso dsr dss ec- ecc ecd ece ecf ecm eco ecr ecs ed- edc edd ede edf edm edo edr eds eec eed eee eef eem eeo eer ees ef- efc efd efe eff efm efo efr efs em- emc emd eme emf emm emo emr ems eo- eoc eod eoe eof eom eoo eor eos erc erd ere erf erm ero err ers es- esc esd ese esf esm eso esr ess fcc fcd fce fcf fcm fco fcr fcs fdc fdd fde fdf fdm fdo fdr fds fec fed fee fef fem feo fer fes ffc ffd ffe fff ffm ffo ffr ffs fmc fmd fme fmf fmm fmo fmr fms foc foe fof fom foo for fos frc frd fre frf frm fro frr frs fsc fsd fse fsf fsm fso fsr fss m-f m-o m-r mc- mcc mcd mce mcf mcm mco mcr mcs mdc mdd mde mdf mdm mdo mdr mds mec med mee mef mem meo mer mes mfc mfd mfe mff mfm mfo mfr mfs mmc mmd mme mmf mmm mmo mmr mms moc mod moe mof mom moo mor mos mrc mrd mre mrf mrm mro mrr mrs msc msd mse msf msm mso msr mss oc- occ ocd ocf ocm oco ocr ocs odc odd ode odf odm odo odr ods oec oed oee oef oem oeo oer oes of- ofc ofd ofe off ofm ofo ofr ofs om- omc omd ome omf omm omo omr oms oo- ooc ood oof oom ooo oor oos or- orc ord ore orf orm oro orr ors os- osc osd ose osf osm oso osr oss rcc rcd rce rcf rcm rco rcr rcs rdc rdd rde rdf rdm rdo rdr rds re- rec red ree ref rem reo rer res rfc rfd rfe rff rfm rfo rfr rfs rmc rmd rme rmf rmm rmo rmr rms roc rod roe rof rom roo ror ros rrc rrd rrf rrm rrr rrs rsc rsd rse rsf rsm rso rsr rss scc scd sce scf scm sco scr scs sdc sdd sde sdf sdm sdo sdr sds se- sec sed see sef sem seo ser ses sfc sfd sfe sff sfm sfo sfr sfs smc smd sme smf smm smo smr sms soc sod soe sof som soo sor sos sr- src srd sre srf srm sro srr srs ss- ssc ssd sse ssf ssm sso ssr sss