-ey ddd dde ddf ddp dds ddt ddy de- ded dee def dep des det dey dfd dfe dff dfp dfs dft dpd dpe dpf dpp dps dpt dsd dse dsf dsp dss dst dsy dtd dte dtf dtp dts dtt dty dy- dyd dye dyp dys dyy ed- edd ede edf edp eds edt edy eed eee eef eep ees eet eey ef- efd efe eff efp efs eft ep- epd epe epf epp eps ept es- esd ese esf esp ess est esy etd ete etf etp ets ett ety eyd eye eyp eys eyt fdd fde fdf fdp fds fdt fed fee fef fep fes fet fey ffd ffe fff ffp ffs fft ffy fpd fpe fpp fps fpt fpy fsd fse fsf fsp fss fst ftd fte ftf ftp fts ftt fty fy- fye fyp p-p pdd pde pdf pdp pds pdt ped pee pef pep pes pet pey pfd pfe pff pfp pfs pft pfy ppd ppe ppf ppp pps ppt ps- psd pse psf psp pss pst psy pt- ptd pte ptf ptp pts ptt pty py- pyd pye pyf pys pyt sdd sde sdf sdp sds sdt sdy se- sed see sef sep ses set sey sfd sfe sff sfp sfs sft spd spe spf spp sps spt spy ss- ssd sse ssf ssp sss sst std ste stf stp sts stt sty sy- syd sye syp sys syt tdd tde tdf tdp tds tdt tdy te- ted tee tef tep tes tet tey tfd tfe tff tfp tfs tft tpd tpe tpf tpp tps tpt tsd tse tsf tsp tss tst tsy ttd tte ttf ttp tts ttt tty tyd tye tyf typ tys tyt yde yds ydt ydy yed yee yef yep yes yet yey yfd yfe yff yfs yft ypd ypf yps yse ysp yss yst ysy ytd yte ytf ytp yts ytt yye yyf yys yyt yyy