-er ddd dde ddf ddg ddi ddl ddr dds ddt de- ded dee def deg dei del der des det dfd dfe dff dfg dfi dfl dfr dfs dft dgd dge dgf dgg dgi dgl dgr dgs dgt di- did die dif dig dii dil dir dis dit dl- dld dle dlf dlg dli dll dlr dls dlt drd dre drg dri drl drr drs drt dsd dse dsf dsg dsi dsl dsr dss dst dtd dte dtf dtg dti dtl dtr dts dtt ed- edd ede edf edg edi edl edr eds edt eed eee eef eeg eel eer ees eet ef- efd efe eff efg efi efl efr efs eft egd ege egf egg egi egl egr egs egt eid eie eif eig eii eil eir eis eit eld ele elf elg eli ell elr els elt erd ere erf erg eri erl err ers ert es- esd ese esf esg esi esl esr ess est etd ete etf etg eti etl etr ets ett fdd fde fdf fdg fdi fdl fdr fds fdt fed fee fef feg fei fel fer fes fet ffd ffe fff ffg ffi ffl 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 flr fls flt frd fre frf frg fri frl frr frs frt fsd fse fsf fsg fsi fsl fsr fss fst ftd fte ftf ftg fti ftl ftr fts ftt g-d gdd gde gdf gdi gdl gdr gds gdt ge- ged gee gef geg gei gel ger ges get gfd gfe gff gfi gfl gfr gfs gft ggd ggg ggi ggr ggs ggt gid gie gif gig gii gil gir gis git gld gle glf glg gli gll glr gls glt grd gre grf grg gri grl grr grs grt gsd gse gsf gsg gsi gsl gsr gss gst gtd gte gtf gtg gti gtl gtr gts gtt i-d i-f idd ide idf idg idi idl idr ids idt ie- ied iee ief ieg iei iel ier ies iet ifd ife iff ifg ifi ifl ifr ifs ift igd ige igf igg igi igl igr igs igt iid iie iif iii iil iir iis iit il- ild ile ilf ilg ili ill ilr ils ilt ir- ird ire irf irg iri irl irr irs irt is- isd ise isf isg isi isl isr iss ist itd ite itf itg iti itl its itt ldd lde ldf ldg ldi ldl ldr lds ldt led lee lef leg lei lel ler les let lfd lfe lff lfg lfi lfl lfr lfs lft lgd lge lgf lgg lgi lgl lgr lgs lgt lid lie lif lig lii lil lir lis lit lld lle llf llg lli lll llr lls llt lrd lrf lrg lri lrr lrs lrt lsd lse lsf lsg lsi lsl lsr lss lst ltd lte ltf ltg lti ltl ltr lts ltt rdd rde rdf rdg rdi rdl rdr rds rdt re- red ree ref reg rei rel rer res ret rfd rfe rff rfg rfi rfl rfr rfs rft rgd rge rgf rgg rgi rgr rgs rgt rid rie rif rig rii ril rir ris rit rld rle rlf rlg rli rll rlr rls rlt rrd rrf rrg rri rrl rrr rrs rrt rsd rse rsf rsg rsi rsl rsr rss rst rtd rte rtf rtg rti rtl rtr rts rtt sdd sde sdf sdg sdi sdl sdr sds sdt se- sed see sef seg sei sel ser ses set sfd sfe sff sfg sfi sfl sfr sfs sft sgd sge sgf sgg sgi sgl sgr sgs sgt sid sie sif sig sii sil sir sis sit sld sle slf slg sli sll slr sls slt sr- srd sre srf srg sri srl srr srs srt ss- ssd sse ssf ssg ssi ssl ssr sss sst std ste stf stg sti stl str sts stt tdd tde tdf tdg tdi tdl tdr tds tdt te- ted tee tef teg tei tel ter tes tet tfd tfe tff tfg tfi tfl tfr tfs tft tge tgf tgg tgi tgl tgr tgs tgt tid tie tif tig tii til tir tis tit tld tle tlf tlg tli tll tlr tls tlt trd tre trf trg tri trl trr trs trt tsd tse tsf tsg tsi tsl tsr tss tst ttd tte ttf ttg tti ttl ttr tts ttt