-er -ic c-- ccc ccd cce cci ccm cco ccr cdc cdd cde cdi cdm cdo cdr ce- cec ced cee cei cem ceo cer ci- cic cid cie cii cim cio cir cmc cmd cme cmi cmm cmo cmr co- coc cod coe coi com coo cor crc crd cre cri crm cro crr dcc dcd dce dci dcm dco dcr ddc ddd dde ddi ddm ddo ddr de- dec ded dee dei dem deo der di- dic did die dii dim dio dir dmc dmd dme dmi dmm dmo dmr doc dod doe doi dom doo dor drc drd dre dri drm dro drr ec- ecc ecd ece eci ecm eco ecr ed- edc edd ede edi edm edo edr eec eed eee eem eeo eer eic eid eie eii eim eio eir em- emc emd eme emi emm emo emr eo- eoc eod eoe eoi eom eoo eor erc erd ere eri erm ero err i-d icc icd ice ici icm ico icr idc idd ide idi idm ido idr ie- iec ied iee iei iem ier iic iid iie iii iim iio iir im- imc imd ime imi imm imo io- ioc iod ioe ioi iom ioo ior ir- irc ird ire iri irm iro irr m-o m-r mc- mcc mcd mce mci mcm mco mcr mdc mdd mde mdi mdm mdo mdr mec med mee mei mem meo mer mi- mic mid mie mii mim mio mir mmc mmd mme mmi mmm mmo mmr moc mod moe moi mom moo mor mrc mrd mre mri mrm mro mrr o-i oc- occ ocd oci ocm oco ocr odc odd ode odi odm odo odr oec oed oee oei oem oeo oer oic oid oie oii oim oio oir om- omc omd ome omi omm omo omr oo- ooc ood ooi oom ooo oor or- orc ord ore ori orm oro orr rcc rcd rce rci rcm rco rcr rdc rdd rde rdi rdm rdo rdr re- rec red ree rei rem reo rer ric rid rie rii rim rio rir rmc rmd rme rmi rmm rmo rmr roc rod roe roi rom roo ror rrc rrd rri rrm rrr