-th ddd dde ddf ddg ddh ddi ddt ddx de- ded dee def deg deh dei det dex dfd dfe dff dfg dfh dfi dft dfx dgd dge dgf dgg dgh dgi dgt dh- dhd dhe dhf dhh dhi dht di- did die dif dig dih dii dit dix dtd dte dtf dtg dth dti dtt dtx dxd dxi dxt dxx ed- edd ede edf edg edh edi edt edx eed eee eef eeg eet eex ef- efd efe eff efg efh efi eft efx egd ege egf egg egh egi egt egx ehd ehe ehf ehg ehh ehi eht eid eie eif eig eii eit eix etd ete etf etg eth eti ett etx ex- exd exe exh exi ext exx fdd fde fdf fdg fdh fdi fdt fdx fed fee fef feg feh fei fet fex ffd ffe fff ffg ffh ffi fft ffx fgd fge fgf fgg fgh fgi fgt fhe fhf fhg fhh fhi fid fie fif fig fih fii fit fix ftd fte ftf ftg fth fti ftt ftx fxe fxg fxi fxt fxx g-d gdd gde gdf gdh gdi gdt gdx ge- ged gee gef geg geh gei get gex gfd gfe gff gfh gfi gft gfx ggd ggg ggh ggi ggt ghd ghe ghg ghh ghi ght gid gie gif gig gih gii git gtd gte gtf gtg gth gti gtt gtx gxf gxt h-i hdd hde hdf hdg hdh hdi hdt hdx he- hed hee hef heg heh hei het hex hfd hfe hff hfg hfh hfi hft hge hgf hgg hgh hgi hgt hhd hhe hhf hhg hhh hhi hht hid hie hif hig hih hii hit hix htd hte htf htg hth hti htt htx hxd i-d i-f idd ide idf idg idh idi idt idx ie- ied iee ief ieg iei iet iex ifd ife iff ifg ifi ift ifx igd ige igf igg igh igi igt ihd ihe ihf ihg ihh ihi iht iid iie iif iih iii iit iix itd ite itf itg ith iti itt itx ixe ixi t-x tdd tde tdf tdg tdh tdi tdt tdx te- ted tee tef teg teh tei tet tex tfd tfe tff tfg tfh tfi tft tfx tge tgf tgg tgh tgi tgt th- thd the thf thg thh thi tht thx tid tie tif tig tih tii tit tix ttd tte ttf ttg tth tti ttt ttx txe txf txi txt xde xdf xdh xdi xdt xed xee xeg xet xex xfe xfh xft xfx xge xgi xhd xht xie xii xit xix xtf xti xtx xxi xxx