-er -ol ddd dde ddk ddl ddn ddo ddr dds de- ded dee dek del den deo der des dke dkk dkl dko dkr dks dl- dld dle dlk dll dlo dlr dls dnd dne dnk dnl dnn dno dnr dns dod doe dok dol don doo dor dos drd dre drk drl drn dro drr drs dsd dse dsk dsl dsn dso dsr dss ed- edd ede edk edl edn edo edr eds eed eee eek eel een eeo eer ees ekd eke ekl eko ekr eks eld ele elk ell eln elo elr els en- end ene enk enl enn eno enr ens eo- eod eoe eok eol eon eoo eor eos erd ere erk erl ern ero err ers es- esd ese esk esl esn eso esr ess kde kdk kdl kdo kdr kds ke- ked kee kek kel ken keo ker kes kke kkk kkl kkn kkr kks kl- kld klo klr kls kn- knd kne knk knl knn kno knr kod koe kok kol kon koo kor kos krd krk krl krn kro krr krs ksd kse ksk ksl ksn kso ksr kss ldd lde ldk ldl ldn ldo ldr lds led lee lek lel len leo ler les lkl lkr lks lld lle llk lll lln llo llr lls lnd lne lnk lnl lnn lno lnr lns lod loe lok lol lon loo lor los lrd lrk lrn lro lrr lrs lsd lse lsk lsl lsn lso lsr lss ndd nde ndk ndl ndn ndo ndr nds ne- ned nee nek nel nen neo ner nes nke nkk nkn nko nkr nks nld nle nlk nll nln nlo nlr nls nne nnk nnl nnn nno nns no- nod noe nok nol non noo nor nos nrd nre nrk nrl nrn nro nrr nrs nsd nse nsk nsl nsn nso nsr nss odd ode odl odn odo odr ods oed oee oel oen oeo oer oes okd oke okk okl oko okr oks old ole olk oll oln olo ols on- ond one onk onl onn ono onr ons oo- ood ook ool oon ooo oor oos or- ord ore ork orl orn oro orr ors os- osd ose osk osl osn oso osr oss rdd rde rdl rdn rdo rdr rds re- red ree rek rel ren reo rer res rke rkk rko rks rld rle rll rln rlo rlr rls rnd rnn rno rnr rns rod roe rok rol ron roo ror ros rrd rrk rrl rrn rrr rrs rsd rse rsk rsl rsn rso rsr rss sdd sde sdk sdl sdn sdo sdr sds se- sed see sek sel sen seo ser ses sk- skd ske skk skl sko skr sks sld sle slk sll sln slo slr sls snd sne snk snl snn sno snr sns sod soe sok sol son soo sor sos sr- srd sre srk srl srn sro srr srs ss- ssd sse ssk ssl ssn sso ssr sss