-er -ol ddd dde ddf ddi ddl ddn ddo ddr dds de- ded dee def dei del den deo der des dfd dfe dff dfi dfl dfn dfo dfr dfs di- did die dif dii dil din dio dir dis dl- dld dle dlf dli dll dlo dlr dls dnd dne dnf dni dnl dnn dno dnr dns dod doe dof doi dol don doo dor dos drd dre dri drl drn dro drr drs dsd dse dsf dsi dsl dsn dso dsr dss ed- edd ede edf edi edl edn edo edr eds eed eee eef eel een eeo eer ees ef- efd efe eff efi efl efo efr efs eid eie eif eii eil ein eio eir eis eld ele elf eli ell eln elo elr els en- end ene enf eni enl enn eno enr ens eo- eod eoe eof eoi eol eon eoo eor eos erd ere erf eri erl ern ero err ers es- esd ese esf esi esl esn eso esr ess fdd fde fdf fdi fdl fdn fdo fdr fds fed fee fef fei fel fen feo fer fes ffd ffe fff ffi ffl ffn ffo ffr ffs fid fie fif fii fil fin fir fis fld fle flf fli fll fln flo flr fls fnd fne fnf fni fnl fnn fnr fns foe fof foi fol fon foo for fos frd fre frf fri frl frn fro frr frs fsd fse fsf fsi fsl fsn fso fsr fss i-d i-f idd ide idf idi idl idn ido idr ids ie- ied iee ief iei iel ien ier ies ifd ife iff ifi ifl ifn ifo ifr ifs iid iie iif iii iil iin iio iir iis il- ild ile ilf ili ill iln ilo ilr ils in- ind ine inf ini inl inn ino inr ins io- iod ioe iof ioi iol ion ioo ior ios ir- ird ire irf iri irl irn iro irr irs is- isd ise isf isi isl isn iso isr iss ldd lde ldf ldi ldl ldn ldo ldr lds led lee lef lei lel len leo ler les lfd lfe lff lfi lfl lfn lfo lfr lfs lid lie lif lii lil lin lio lir lis lld lle llf lli lll lln llo llr lls lnd lne lni lnl lnn lno lnr lns lod loe lof loi lol lon loo lor los lrd lrf lri lrn lro lrr lrs lsd lse lsf lsi lsl lsn lso lsr lss n-i ndd nde ndf ndi ndl ndn ndo ndr nds ne- ned nee nef nei nel nen neo ner nes nfd nfe nff nfi nfl nfn nfo nfr nfs nid nie nif nii nil nin nio nir nis nld nle nlf nli nll nln nlo nlr nls nne nnf nni nnl nnn nno nns no- nod noe nof noi nol non noo nor nos nrd nre nrf nri nrl nrn nro nrr nrs nsd nse nsf nsi nsl nsn nso nsr nss o-i odd ode odf odi odl odn odo odr ods oed oee oef oei oel oen oeo oer oes of- ofd ofe off ofi ofl ofn ofo ofr ofs oid oie oif oii oil oin oio oir ois old ole olf oli oll oln olo ols on- ond one onf oni onl onn ono onr ons oo- ood oof ooi ool oon ooo oor oos or- ord ore orf ori orl orn oro orr ors os- osd ose osf osi osl osn oso osr oss rdd rde rdf rdi rdl rdn rdo rdr rds re- red ree ref rei rel ren reo rer res rfd rfe rff rfi rfl rfn rfo rfr rfs rid rie rif rii ril rin rio rir ris rld rle rlf rli rll rln rlo rlr rls rnd rni rnn rno rnr rns rod roe rof roi rol ron roo ror ros rrd rrf rri rrl rrn rrr rrs rsd rse rsf rsi rsl rsn rso rsr rss sdd sde sdf sdi sdl sdn sdo sdr sds se- sed see sef sei sel sen seo ser ses sfd sfe sff sfi sfl sfn sfo sfr sfs sid sie sif sii sil sin sio sir sis sld sle slf sli sll sln slo slr sls snd sne snf sni snl snn sno snr sns sod soe sof soi sol son soo sor sos sr- srd sre srf sri srl srn sro srr srs ss- ssd sse ssf ssi ssl ssn sso ssr sss