ddd dde ddf ddi ddp dds ddt de- ded dee def dei dep des det dfd dfe dff dfi dfp dfs dft di- did die dif dii dip dis dit dpd dpe dpf dpi dpp dps dpt dsd dse dsf dsi dsp dss dst dtd dte dtf dti dtp dts dtt ed- edd ede edf edi edp eds edt eed eee eef eep ees eet ef- efd efe eff efi efp efs eft eid eie eif eii eip eis eit ep- epd epe epf epi epp eps ept es- esd ese esf esi esp ess est etd ete etf eti etp ets ett fdd fde fdf fdi fdp fds fdt fed fee fef fei fep fes fet ffd ffe fff ffi ffp ffs fft fid fie fif fii fip fis fit fpd fpe fpi fpp fps fpt fsd fse fsf fsi fsp fss fst ftd fte ftf fti ftp fts ftt i-d i-f idd ide idf idi idp ids idt ie- ied iee ief iei iep ies iet ifd ife iff ifi ifp ifs ift iid iie iif iii iip iis iit ipd ipe ipf ipi ipp ips ipt is- isd ise isf isi isp iss ist itd ite itf iti itp its itt p-p pdd pde pdf pdi pdp pds pdt ped pee pef pei pep pes pet pfd pfe pff pfi pfp pfs pft pid pie pif pii pip pis pit ppd ppe ppf ppi ppp pps ppt ps- psd pse psf psi psp pss pst pt- ptd pte ptf pti ptp pts ptt sdd sde sdf sdi sdp sds sdt se- sed see sef sei sep ses set sfd sfe sff sfi sfp sfs sft sid sie sif sii sip sis sit spd spe spf spi spp sps spt ss- ssd sse ssf ssi ssp sss sst std ste stf sti stp sts stt tdd tde tdf tdi tdp tds tdt te- ted tee tef tei tep tes tet tfd tfe tff tfi tfp tfs tft tid tie tif tii tip tis tit tpd tpe tpf tpi tpp tps tpt tsd tse tsf tsi tsp tss tst ttd tte ttf tti ttp tts ttt