-er -ic c-- ccc ccd cce cci ccm ccr cdc cdd cde cdi cdm cdr ce- cec ced cee cei cem cer ci- cic cid cie cii cim cir cmc cmd cme cmi cmm cmr crc crd cre cri crm crr dcc dcd dce dci dcm dcr ddc ddd dde ddi ddm ddr de- dec ded dee dei dem der di- dic did die dii dim dir dmc dmd dme dmi dmm dmr drc drd dre dri drm drr ec- ecc ecd ece eci ecm ecr ed- edc edd ede edi edm edr eec eed eee eem eer eic eid eie eii eim eir em- emc emd eme emi emm emr erc erd ere eri erm err i-d icc icd ice ici icm icr idc idd ide idi idm idr ie- iec ied iee iei iem ier iic iid iie iii iim iir im- imc imd ime imi imm ir- irc ird ire iri irm irr m-r mc- mcc mcd mce mci mcm mcr mdc mdd mde mdi mdm mdr mec med mee mei mem mer mi- mic mid mie mii mim mir mmc mmd mme mmi mmm mmr mrc mrd mre mri mrm mrr rcc rcd rce rci rcm rcr rdc rdd rde rdi rdm rdr re- rec red ree rei rem rer ric rid rie rii rim rir rmc rmd rme rmi rmm rmr rrc rrd rri rrm rrr