-er ddd dde ddi ddk ddm ddo ddr dds de- ded dee dei dek dem deo der des di- did die dii dik dim dio dir dis dke dki dkk dkm dko dkr dks dmd dme dmi dmk dmm dmo dmr dms dod doe doi dok dom doo dor dos drd dre dri drk drm dro drr drs dsd dse dsi dsk dsm dso dsr dss ed- edd ede edi edk edm edo edr eds eed eee eek eem eeo eer ees eid eie eii eik eim eio eir eis ekd eke eki eko ekr eks em- emd eme emi emk emm emo emr ems eo- eod eoe eoi eok eom eoo eor eos erd ere eri erk erm ero err ers es- esd ese esi esk esm eso esr ess i-d idd ide idi idk idm ido idr ids ie- ied iee iei iek iem ier ies iid iie iii iim iio iir iis ike iki ikk iko ikr iks im- imd ime imi imm imo ims io- iod ioe ioi iom ioo ior ios ir- ird ire iri irk irm iro irr irs is- isd ise isi isk ism iso isr iss kde kdk kdm kdo kdr kds ke- ked kee kei kek kem keo ker kes kid kie kii kik kim kio kir kis kke kki kkk kkm kkr kks kmd kme kmi kmk kmm kmo kms kod koe koi kok kom koo kor kos krd kri krk kro krr krs ksd kse ksi ksk ksm kso ksr kss m-o m-r mdd mde mdi mdk mdm mdo mdr mds med mee mei mek mem meo mer mes mi- mid mie mii mik mim mio mir mis mkd mke mkk mkm mko mkr mks mmd mme mmi mmk mmm mmo mmr mms mod moe moi mok mom moo mor mos mrd mre mri mrk mrm mro mrr mrs msd mse msi msk msm mso msr mss o-i odd ode odi odm odo odr ods oed oee oei oem oeo oer oes oid oie oii oik oim oio oir ois okd oke oki okk oko okr oks om- omd ome omi omm omo omr oms oo- ood ooi ook oom ooo oor oos or- ord ore ori ork orm oro orr ors os- osd ose osi osk osm oso osr oss rdd rde rdi rdm rdo rdr rds re- red ree rei rek rem reo rer res rid rie rii rik rim rio rir ris rke rkk rkm rko rks rmd rme rmi rmm rmo rmr rms rod roe roi rok rom roo ror ros rrd rri rrk rrm rrr rrs rsd rse rsi rsk rsm rso rsr rss sdd sde sdi sdk sdm sdo sdr sds se- sed see sei sek sem seo ser ses sid sie sii sik sim sio sir sis sk- skd ske ski skk skm sko skr sks smd sme smi smk smm smo smr sms sod soe soi sok som soo sor sos sr- srd sre sri srk srm sro srr srs ss- ssd sse ssi ssk ssm sso ssr sss