-er -ol ddd dde ddf ddi ddk ddl ddn ddo ddr de- ded dee def dei dek del den deo der dfd dfe dff dfi dfk dfl dfn dfo dfr di- did die dif dii dik dil din dio dir dke dki dkk dkl dko dkr dl- dld dle dlf dli dlk dll dlo dlr dnd dne dnf dni dnk dnl dnn dno dnr dod doe dof doi dok dol don doo dor drd dre dri drk drl drn dro drr ed- edd ede edf edi edk edl edn edo edr eed eee eef eek eel een eeo eer ef- efd efe eff efi efl efo efr eid eie eif eii eik eil ein eio eir ekd eke ekf eki ekl eko ekr eld ele elf eli elk ell eln elo elr en- end ene enf eni enk enl enn eno enr eo- eod eoe eof eoi eok eol eon eoo eor erd ere erf eri erk erl ern ero err fdd fde fdf fdi fdk fdl fdn fdo fdr fed fee fef fei fek fel fen feo fer ffd ffe fff ffi ffk ffl ffn ffo ffr fid fie fif fii fik fil fin fir fkf fki fkk fkl fld fle flf fli fll fln flo flr fnd fne fnf fni fnk fnl fnn fnr foe fof foi fok fol fon foo for frd fre frf fri frk frl frn fro frr i-d i-f idd ide idf idi idk idl idn ido idr ie- ied iee ief iei iek iel ien ier ifd ife iff ifi ifl ifn ifo ifr iid iie iif iii iil iin iio iir ike ikf iki ikk ikl iko ikr il- ild ile ilf ili ilk ill iln ilo ilr in- ind ine inf ini ink inl inn ino inr io- iod ioe iof ioi iol ion ioo ior ir- ird ire irf iri irk irl irn iro irr kde kdf kdk kdl kdo kdr ke- ked kee kef kei kek kel ken keo ker kfd kff kfi kfo kid kie kif kii kik kil kin kio kir kke kki kkk kkl kkn kkr kl- kld klf kli klo klr kn- knd kne knf kni knk knl knn kno knr kod koe kof koi kok kol kon koo kor krd krf kri krk krl krn kro krr ldd lde ldf ldi ldk ldl ldn ldo ldr led lee lef lei lek lel len leo ler lfd lfe lff lfi lfk lfl lfn lfo lfr lid lie lif lii lik lil lin lio lir lkl lkr lld lle llf lli llk lll lln llo llr lnd lne lni lnk lnl lnn lno lnr lod loe lof loi lok lol lon loo lor lrd lrf lri lrk lrn lro lrr n-i ndd nde ndf ndi ndk ndl ndn ndo ndr ne- ned nee nef nei nek nel nen neo ner nfd nfe nff nfi nfk nfl nfn nfo nfr nid nie nif nii nik nil nin nio nir nke nkf nki nkk nkn nko nkr nld nle nlf nli nlk nll nln nlo nlr nne nnf nni nnk nnl nnn nno no- nod noe nof noi nok nol non noo nor nrd nre nrf nri nrk nrl nrn nro nrr o-i odd ode odf odi odl odn odo odr oed oee oef oei oel oen oeo oer of- ofd ofe off ofi ofl ofn ofo ofr oid oie oif oii oik oil oin oio oir okd oke oki okk okl oko okr old ole olf oli olk oll oln olo on- ond one onf oni onk onl onn ono onr oo- ood oof ooi ook ool oon ooo oor or- ord ore orf ori ork orl orn oro orr rdd rde rdf rdi rdl rdn rdo rdr re- red ree ref rei rek rel ren reo rer rfd rfe rff rfi rfk rfl rfn rfo rfr rid rie rif rii rik ril rin rio rir rke rkf rkk rko rld rle rlf rli rll rln rlo rlr rnd rni rnn rno rnr rod roe rof roi rok rol ron roo ror rrd rrf rri rrk rrl rrn rrr