-er ddd dde ddi ddk ddm ddr dds de- ded dee dei dek dem der des di- did die dii dik dim dir dis dke dki dkk dkm dkr dks dmd dme dmi dmk dmm dmr dms drd dre dri drk drm drr drs dsd dse dsi dsk dsm dsr dss ed- edd ede edi edk edm edr eds eed eee eek eem eer ees eid eie eii eik eim eir eis ekd eke eki ekr eks em- emd eme emi emk emm emr ems erd ere eri erk erm err ers es- esd ese esi esk esm esr ess i-d idd ide idi idk idm idr ids ie- ied iee iei iek iem ier ies iid iie iii iim iir iis ike iki ikk ikr iks im- imd ime imi imm ims ir- ird ire iri irk irm irr irs is- isd ise isi isk ism isr iss kde kdk kdm kdr kds ke- ked kee kei kek kem ker kes kid kie kii kik kim kir kis kke kki kkk kkm kkr kks kmd kme kmi kmk kmm kms krd kri krk krr krs ksd kse ksi ksk ksm ksr kss m-r mdd mde mdi mdk mdm mdr mds med mee mei mek mem mer mes mi- mid mie mii mik mim mir mis mkd mke mkk mkm mkr mks mmd mme mmi mmk mmm mmr mms mrd mre mri mrk mrm mrr mrs msd mse msi msk msm msr mss rdd rde rdi rdm rdr rds re- red ree rei rek rem rer res rid rie rii rik rim rir ris rke rkk rkm rks rmd rme rmi rmm rmr rms rrd rri rrk rrm rrr rrs rsd rse rsi rsk rsm rsr rss sdd sde sdi sdk sdm sdr sds se- sed see sei sek sem ser ses sid sie sii sik sim sir sis sk- skd ske ski skk skm skr sks smd sme smi smk smm smr sms sr- srd sre sri srk srm srr srs ss- ssd sse ssi ssk ssm ssr sss