-ey eee eef eep ees eet eey ef- efe eff efi efp efs eft eie eif eii eip eis eit ep- epe epf epi epp eps ept es- ese esf esi esp ess est esy ete etf eti etp ets ett ety eye eyp eys eyt fee fef fei fep fes fet fey ffe fff ffi ffp ffs fft ffy fie fif fii fip fis fit fpe fpi fpp fps fpt fpy fse fsf fsi fsp fss fst fte ftf fti ftp fts ftt fty fy- fye fyi fyp i-f ie- iee ief iei iep ies iet iey ife iff ifi ifp ifs ift ify iie iif iii iip iis iit ipe ipf ipi ipp ips ipt ipy is- ise isf isi isp iss ist isy ite itf iti itp its itt ity iye iys iyt iyy p-p pee pef pei pep pes pet pey pfe pff pfi pfp pfs pft pfy pie pif pii pip pis pit ppe ppf ppi ppp pps ppt ps- pse psf psi psp pss pst psy pt- pte ptf pti ptp pts ptt pty py- pye pyf pys pyt se- see sef sei sep ses set sey sfe sff sfi sfp sfs sft sie sif sii sip sis sit spe spf spi spp sps spt spy ss- sse ssf ssi ssp sss sst ste stf sti stp sts stt sty sy- sye syi syp sys syt te- tee tef tei tep tes tet tey tfe tff tfi tfp tfs tft tie tif tii tip tis tit tiy tpe tpf tpi tpp tps tpt tse tsf tsi tsp tss tst tsy tte ttf tti ttp tts ttt tty tye tyf typ tys tyt yee yef yei yep yes yet yey yfe yff yfs yft yie yif yii yip yis yit ypf yps yse ysi ysp yss yst ysy yte ytf ytp yts ytt yye yyf yys yyt yyy