-er -ic c-- ccc ccd cce cci cck ccm ccr ccs cdc cdd cde cdi cdk cdm cdr cds ce- cec ced cee cei cek cem cer ces ci- cic cid cie cii cik cim cir cis ckc ckd cki ckm cks cmc cmd cme cmi cmk cmm cmr cms crc crd cre cri crk crm crr crs csc csd cse csi csk csm csr css dcc dcd dce dci dck dcm dcr dcs ddc ddd dde ddi ddk ddm ddr dds de- dec ded dee dei dek dem der des di- dic did die dii dik dim dir dis dkc dke dki dkk dkm dkr dks dmc dmd dme dmi dmk dmm dmr dms drc drd dre dri drk drm drr drs dsc dsd dse dsi dsk dsm dsr dss ec- ecc ecd ece eci eck ecm ecr ecs ed- edc edd ede edi edk edm edr eds eec eed eee eek eem eer ees eic eid eie eii eik eim eir eis ekc ekd eke eki ekr eks em- emc emd eme emi emk emm emr ems erc erd ere eri erk erm err ers es- esc esd ese esi esk esm esr ess i-d icc icd ice ici ick icm icr ics idc idd ide idi idk idm idr ids ie- iec ied iee iei iek iem ier ies iic iid iie iii iim iir iis ikc ike iki ikk ikr iks im- imc imd ime imi imm ims ir- irc ird ire iri irk irm irr irs is- isc isd ise isi isk ism isr iss kcc kcd kce kci kck kcm kcr kcs kdc kde kdk kdm kdr kds ke- kec ked kee kei kek kem ker kes kic kid kie kii kik kim kir kis kkc kke kki kkk kkm kkr kks kmc kmd kme kmi kmk kmm kms krc krd kri krk krr krs ksc ksd kse ksi ksk ksm ksr kss m-r mc- mcc mcd mce mci mck mcm mcr mcs mdc mdd mde mdi mdk mdm mdr mds mec med mee mei mek mem mer mes mi- mic mid mie mii mik mim mir mis mkc mkd mke mkk mkm mkr mks mmc mmd mme mmi mmk mmm mmr mms mrc mrd mre mri mrk mrm mrr mrs msc msd mse msi msk msm msr mss rcc rcd rce rci rcm rcr rcs rdc rdd rde rdi rdm rdr rds re- rec red ree rei rek rem rer res ric rid rie rii rik rim rir ris rkc rke rkk rkm rks rmc rmd rme rmi rmm rmr rms rrc rrd rri rrk rrm rrr rrs rsc rsd rse rsi rsk rsm rsr rss scc scd sce sci sck scm scr scs sdc sdd sde sdi sdk sdm sdr sds se- sec sed see sei sek sem ser ses sic sid sie sii sik sim sir sis sk- skc skd ske ski skk skm skr sks smc smd sme smi smk smm smr sms sr- src srd sre sri srk srm srr srs ss- ssc ssd sse ssi ssk ssm ssr sss