-er -ol ddd dde ddi ddk ddl ddo ddr dds de- ded dee dei dek del deo der des di- did die dii dik dil dio dir dis dke dki dkk dkl dko dkr dks dl- dld dle dli dlk dll dlo dlr dls dod doe doi dok dol doo dor dos drd dre dri drk drl dro drr drs dsd dse dsi dsk dsl dso dsr dss ed- edd ede edi edk edl edo edr eds eed eee eek eel eeo eer ees eid eie eii eik eil eio eir eis ekd eke eki ekl eko ekr eks eld ele eli elk ell elo elr els eo- eod eoe eoi eok eol eoo eor eos erd ere eri erk erl ero err ers es- esd ese esi esk esl eso esr ess i-d idd ide idi idk idl ido idr ids ie- ied iee iei iek iel ier ies iid iie iii iil iio iir iis ike iki ikk ikl iko ikr iks il- ild ile ili ilk ill ilo ilr ils io- iod ioe ioi iol ioo ior ios ir- ird ire iri irk irl iro irr irs is- isd ise isi isk isl iso isr iss kde kdk kdl kdo kdr kds ke- ked kee kei kek kel keo ker kes kid kie kii kik kil kio kir kis kke kki kkk kkl kkr kks kl- kld kli klo klr kls kod koe koi kok kol koo kor kos krd kri krk krl kro krr krs ksd kse ksi ksk ksl kso ksr kss ldd lde ldi ldk ldl ldo ldr lds led lee lei lek lel leo ler les lid lie lii lik lil lio lir lis lkl lkr lks lld lle lli llk lll llo llr lls lod loe loi lok lol loo lor los lrd lri lrk lro lrr lrs lsd lse lsi lsk lsl lso lsr lss o-i odd ode odi odl odo odr ods oed oee oei oel oeo oer oes oid oie oii oik oil oio oir ois okd oke oki okk okl oko okr oks old ole oli olk oll olo ols oo- ood ooi ook ool ooo oor oos or- ord ore ori ork orl oro orr ors os- osd ose osi osk osl oso osr oss rdd rde rdi rdl rdo rdr rds re- red ree rei rek rel reo rer res rid rie rii rik ril rio rir ris rke rkk rko rks rld rle rli rll rlo rlr rls rod roe roi rok rol roo ror ros rrd rri rrk rrl rrr rrs rsd rse rsi rsk rsl rso rsr rss sdd sde sdi sdk sdl sdo sdr sds se- sed see sei sek sel seo ser ses sid sie sii sik sil sio sir sis sk- skd ske ski skk skl sko skr sks sld sle sli slk sll slo slr sls sod soe soi sok sol soo sor sos sr- srd sre sri srk srl sro srr srs ss- ssd sse ssi ssk ssl sso ssr sss