-ey eee een eep ees eet eey en- ene enn enp ens ent eny ep- epe epn epp eps ept es- ese esn esp ess est esy ete etn etp ets ett ety eye eyn eyp eys eyt ne- nee nen nep nes net ney nne nnn nnp nns nnt npe npn npp nps npt nse nsn nsp nss nst nsy nte ntn ntp nts ntt nye nyn nyp nys nyt nyy p-p pee pen pep pes pet pey pn- pne pnn pnp pns pnt pny ppe ppn ppp pps ppt ps- pse psn psp pss pst psy pt- pte ptn ptp pts ptt pty py- pye pyn pys pyt se- see sen sep ses set sey sne snn snp sns snt sny spe spn spp sps spt spy ss- sse ssn ssp sss sst ste stn stp sts stt sty sy- sye syn syp sys syt te- tee ten tep tes tet tey tne tnn tnp tns tnt tpe tpn tpp tps tpt tse tsn tsp tss tst tsy tte ttn ttp tts ttt tty tye tyn typ tys tyt yee yen yep yes yet yey yne ynn ynp yns yny yps yse ysp yss yst ysy yte ytn ytp yts ytt yye yys yyt yyy