-er ddd dde ddf ddg ddi ddn ddr dds ddt de- ded dee def deg dei den der des det dfd dfe dff dfg dfi dfn dfr dfs dft dgd dge dgf dgg dgi dgn dgr dgs dgt di- did die dif dig dii din dir dis dit dnd dne dnf dng dni dnn dnr dns dnt drd dre drg dri drn drr drs drt dsd dse dsf dsg dsi dsn dsr dss dst dtd dte dtf dtg dti dtn dtr dts dtt ed- edd ede edf edg edi edn edr eds edt eed eee eef eeg een eer ees eet ef- efd efe eff efg efi efr efs eft egd ege egf egg egi egn egr egs egt eid eie eif eig eii ein eir eis eit en- end ene enf eng eni enn enr ens ent erd ere erf erg eri ern err ers ert es- esd ese esf esg esi esn esr ess est etd ete etf etg eti etn etr ets ett fdd fde fdf fdg fdi fdn fdr fds fdt fed fee fef feg fei fen fer fes fet ffd ffe fff ffg ffi ffn ffr ffs fft fgd fge fgf fgg fgi fgn fgr fgs fgt fid fie fif fig fii fin fir fis fit fnd fne fnf fng fni fnn fnr fns fnt frd fre frf frg fri frn frr frs frt fsd fse fsf fsg fsi fsn fsr fss fst ftd fte ftf ftg fti ftn ftr fts ftt g-d gdd gde gdf gdi gdn gdr gds gdt ge- ged gee gef geg gei gen ger ges get gfd gfe gff gfi gfr gfs gft ggd ggg ggi ggn ggr ggs ggt gid gie gif gig gii gin gir gis git gnd gne gnf gni gnn gnr gns gnt grd gre grf grg gri grn grr grs grt gsd gse gsf gsg gsi gsn gsr gss gst gtd gte gtf gtg gti gtn gtr gts gtt i-d i-f idd ide idf idg idi idn idr ids idt ie- ied iee ief ieg iei ien ier ies iet ifd ife iff ifg ifi ifn ifr ifs ift igd ige igf igg igi ign igr igs igt iid iie iif iii iin iir iis iit in- ind ine inf ing ini inn inr ins int ir- ird ire irf irg iri irn irr irs irt is- isd ise isf isg isi isn isr iss ist itd ite itf itg iti itn its itt n-i ndd nde ndf ndg ndi ndn ndr nds ndt ne- ned nee nef neg nei nen ner nes net nfd nfe nff nfi nfn nfr nfs nft ngd nge ngf ngg ngi ngn ngs ngt nid nie nif nig nii nin nir nis nit nne nnf nng nni nnn nns nnt nrd nre nrf nrg nri nrn nrr nrs nrt nsd nse nsf nsg nsi nsn nsr nss nst ntd nte ntf ntg nti ntn ntr nts ntt rdd rde rdf rdg rdi rdn rdr rds rdt re- red ree ref reg rei ren rer res ret rfd rfe rff rfg rfi rfn rfr rfs rft rgd rge rgf rgg rgi rgn rgr rgs rgt rid rie rif rig rii rin rir ris rit rnd rng rni rnn rnr rns rnt rrd rrf rrg rri rrn rrr rrs rrt rsd rse rsf rsg rsi rsn rsr rss rst rtd rte rtf rtg rti rtn rtr rts rtt sdd sde sdf sdg sdi sdn sdr sds sdt se- sed see sef seg sei sen ser ses set sfd sfe sff sfg sfi sfn sfr sfs sft sgd sge sgf sgg sgi sgn sgr sgs sgt sid sie sif sig sii sin sir sis sit snd sne snf sng sni snn snr sns snt sr- srd sre srf srg sri srn srr srs srt ss- ssd sse ssf ssg ssi ssn ssr sss sst std ste stf stg sti stn str sts stt tdd tde tdf tdg tdi tdn tdr tds tdt te- ted tee tef teg tei ten ter tes tet tfd tfe tff tfg tfi tfn tfr tfs tft tge tgf tgg tgi tgn tgr tgs tgt tid tie tif tig tii tin tir tis tit tnd tne tnf tng tni tnn tnr tns tnt trd tre trf trg tri trn trr trs trt tsd tse tsf tsg tsi tsn tsr tss tst ttd tte ttf ttg tti ttn ttr tts ttt