-er -ic c-- ccc ccd cce ccf cci ccm cco ccr ccs cdc cdd cde cdf cdi cdm cdo cdr cds ce- cec ced cee cef cei cem ceo cer ces cfc cfd cfe cff cfi cfm cfo cfr cfs ci- cic cid cie cif cii cim cio cir cis cmc cmd cme cmf cmi cmm cmo cmr cms co- coc cod coe cof coi com coo cor cos crc crd cre crf cri crm cro crr crs csc csd cse csf csi csm cso csr css dcc dcd dce dcf dci dcm dco dcr dcs ddc ddd dde ddf ddi ddm ddo ddr dds de- dec ded dee def dei dem deo der des dfc dfd dfe dff dfi dfm dfo dfr dfs di- dic did die dif dii dim dio dir dis dmc dmd dme dmf dmi dmm dmo dmr dms doc dod doe dof doi dom doo dor dos drc drd dre dri drm dro drr drs dsc dsd dse dsf dsi dsm dso dsr dss ec- ecc ecd ece ecf eci ecm eco ecr ecs ed- edc edd ede edf edi edm edo edr eds eec eed eee eef eem eeo eer ees ef- efc efd efe eff efi efm efo efr efs eic eid eie eif eii eim eio eir eis em- emc emd eme emf emi emm emo emr ems eo- eoc eod eoe eof eoi eom eoo eor eos erc erd ere erf eri erm ero err ers es- esc esd ese esf esi esm eso esr ess fcc fcd fce fcf fci fcm fco fcr fcs fdc fdd fde fdf fdi fdm fdo fdr fds fec fed fee fef fei fem feo fer fes ffc ffd ffe fff ffi ffm ffo ffr ffs fic fid fie fif fii fim fir fis fmc fmd fme fmf fmi fmm fmo fmr fms foc foe fof foi fom foo for fos frc frd fre frf fri frm fro frr frs fsc fsd fse fsf fsi fsm fso fsr fss i-d i-f icc icd ice icf ici icm ico icr ics idc idd ide idf idi idm ido idr ids ie- iec ied iee ief iei iem ier ies ifc ifd ife iff ifi ifm ifo ifr ifs iic iid iie iif iii iim iio iir iis im- imc imd ime imf imi imm imo ims io- ioc iod ioe iof ioi iom ioo ior ios ir- irc ird ire irf iri irm iro irr irs is- isc isd ise isf isi ism iso isr iss m-f m-o m-r mc- mcc mcd mce mcf mci mcm mco mcr mcs mdc mdd mde mdf mdi mdm mdo mdr mds mec med mee mef mei mem meo mer mes mfc mfd mfe mff mfi mfm mfo mfr mfs mi- mic mid mie mif mii mim mio mir mis mmc mmd mme mmf mmi mmm mmo mmr mms moc mod moe mof moi mom moo mor mos mrc mrd mre mrf mri mrm mro mrr mrs msc msd mse msf msi msm mso msr mss o-i oc- occ ocd ocf oci ocm oco ocr ocs odc odd ode odf odi odm odo odr ods oec oed oee oef oei oem oeo oer oes of- ofc ofd ofe off ofi ofm ofo ofr ofs oic oid oie oif oii oim oio oir ois om- omc omd ome omf omi omm omo omr oms oo- ooc ood oof ooi oom ooo oor oos or- orc ord ore orf ori orm oro orr ors os- osc osd ose osf osi osm oso osr oss rcc rcd rce rcf rci rcm rco rcr rcs rdc rdd rde rdf rdi rdm rdo rdr rds re- rec red ree ref rei rem reo rer res rfc rfd rfe rff rfi rfm rfo rfr rfs ric rid rie rif rii rim rio rir ris rmc rmd rme rmf rmi rmm rmo rmr rms roc rod roe rof roi rom roo ror ros rrc rrd rrf rri rrm rrr rrs rsc rsd rse rsf rsi rsm rso rsr rss scc scd sce scf sci scm sco scr scs sdc sdd sde sdf sdi sdm sdo sdr sds se- sec sed see sef sei sem seo ser ses sfc sfd sfe sff sfi sfm sfo sfr sfs sic sid sie sif sii sim sio sir sis smc smd sme smf smi smm smo smr sms soc sod soe sof soi som soo sor sos sr- src srd sre srf sri srm sro srr srs ss- ssc ssd sse ssf ssi ssm sso ssr sss