-er -ol ddd dde ddf ddg ddi ddl ddo ddr dds ddt de- ded dee def deg dei del deo der des det dfd dfe dff dfg dfi dfl dfo dfr dfs dft dgd dge dgf dgg dgi dgl dgr dgs dgt di- did die dif dig dii dil dio dir dis dit dl- dld dle dlf dlg dli dll dlo dlr dls dlt dod doe dof dog doi dol doo dor dos dot drd dre drg dri drl dro drr drs drt dsd dse dsf dsg dsi dsl dso dsr dss dst dtd dte dtf dtg dti dtl dto dtr dts dtt ed- edd ede edf edg edi edl edo edr eds edt eed eee eef eeg eel eeo eer ees eet ef- efd efe eff efg efi efl efo efr efs eft egd ege egf egg egi egl ego egr egs egt eid eie eif eig eii eil eio eir eis eit eld ele elf elg eli ell elo elr els elt eo- eod eoe eof eog eoi eol eoo eor eos eot erd ere erf erg eri erl ero err ers ert es- esd ese esf esg esi esl eso esr ess est etd ete etf etg eti etl eto etr ets ett fdd fde fdf fdg fdi fdl fdo fdr fds fdt fed fee fef feg fei fel feo fer fes fet ffd ffe fff ffg ffi ffl ffo ffr ffs fft fgd fge fgf fgg fgi fgl fgr fgs fgt fid fie fif fig fii fil fir fis fit fld fle flf flg fli fll flo flr fls flt foe fof fog foi fol foo for fos fot frd fre frf frg fri frl fro frr frs frt fsd fse fsf fsg fsi fsl fso fsr fss fst ftd fte ftf ftg fti ftl fto ftr fts ftt g-d gdd gde gdf gdi gdl gdo gdr gds gdt ge- ged gee gef geg gei gel geo ger ges get gfd gfe gff gfi gfl gfo gfr gfs gft ggd ggg ggi ggo ggr ggs ggt gid gie gif gig gii gil gio gir gis git gld gle glf glg gli gll glo glr gls glt god goe gof gog goi gol goo gor gos got grd gre grf grg gri grl gro grr grs grt gsd gse gsf gsg gsi gsl gso gsr gss gst gtd gte gtf gtg gti gtl gto gtr gts gtt i-d i-f idd ide idf idg idi idl ido idr ids idt ie- ied iee ief ieg iei iel ier ies iet ifd ife iff ifg ifi ifl ifo ifr ifs ift igd ige igf igg igi igl igo igr igs igt iid iie iif iii iil iio iir iis iit il- ild ile ilf ilg ili ill ilo ilr ils ilt io- iod ioe iof iog ioi iol ioo ior ios iot ir- ird ire irf irg iri irl iro irr irs irt is- isd ise isf isg isi isl iso isr iss ist itd ite itf itg iti itl ito its itt ldd lde ldf ldg ldi ldl ldo ldr lds ldt led lee lef leg lei lel leo ler les let lfd lfe lff lfg lfi lfl lfo lfr lfs lft lgd lge lgf lgg lgi lgl lgo lgr lgs lgt lid lie lif lig lii lil lio lir lis lit lld lle llf llg lli lll llo llr lls llt lod loe lof log loi lol loo lor los lot lrd lrf lrg lri lro lrr lrs lrt lsd lse lsf lsg lsi lsl lso lsr lss lst ltd lte ltf ltg lti ltl lto ltr lts ltt o-i odd ode odf odg odi odl odo odr ods odt oed oee oef oeg oei oel oeo oer oes oet of- ofd ofe off ofg ofi ofl ofo ofr ofs oft ogd oge ogf ogg ogi ogl ogo ogs ogt oid oie oif oii oil oio oir ois oit old ole olf olg oli oll olo ols olt oo- ood oof oog ooi ool ooo oor oos oot or- ord ore orf org ori orl oro orr ors ort os- osd ose osf osg osi osl oso osr oss ost ot- otd ote otf otg oti otl oto otr ots ott rdd rde rdf rdg rdi rdl rdo rdr rds rdt re- red ree ref reg rei rel reo rer res ret rfd rfe rff rfg rfi rfl rfo rfr rfs rft rgd rge rgf rgg rgi rgo rgr rgs rgt rid rie rif rig rii ril rio rir ris rit rld rle rlf rlg rli rll rlo rlr rls rlt rod roe rof rog roi rol roo ror ros rot rrd rrf rrg rri rrl rrr rrs rrt rsd rse rsf rsg rsi rsl rso rsr rss rst rtd rte rtf rtg rti rtl rto rtr rts rtt sdd sde sdf sdg sdi sdl sdo sdr sds sdt se- sed see sef seg sei sel seo ser ses set sfd sfe sff sfg sfi sfl sfo sfr sfs sft sgd sge sgf sgg sgi sgl sgo sgr sgs sgt sid sie sif sig sii sil sio sir sis sit sld sle slf slg sli sll slo slr sls slt sod soe sof sog soi sol soo sor sos sot sr- srd sre srf srg sri srl sro srr srs srt ss- ssd sse ssf ssg ssi ssl sso ssr sss sst std ste stf stg sti stl sto str sts stt tdd tde tdf tdg tdi tdl tdo tdr tds tdt te- ted tee tef teg tei tel teo ter tes tet tfd tfe tff tfg tfi tfl tfo tfr tfs tft tge tgf tgg tgi tgl tgo tgr tgs tgt tid tie tif tig tii til tio tir tis tit tld tle tlf tlg tli tll tlo tlr tls tlt to- tod toe tof tog toi tol too tor tos tot trd tre trf trg tri trl tro trr trs trt tsd tse tsf tsg tsi tsl tso tsr tss tst ttd tte ttf ttg