-ey eee eep eet eex eey eie eii eip eit eix ep- epe epi epp ept epx ete eti etp ett etx ety ex- exe exi exp ext exx exy eye eyp eyt ie- iee iei iep iet iex iey iie iii iip iit iix ipe ipi ipp ipt ipx ipy ite iti itp itt itx ity ixe ixi ixy iye iyt iyy p-p pee pei pep pet pex pey pie pii pip pit pix ppe ppi ppp ppt ppx pt- pte pti ptp ptt ptx pty pxe pxt py- pye pyt pyx t-x te- tee tei tep tet tex tey tie tii tip tit tix tiy tpe tpi tpp tpt tpx tte tti ttp ttt ttx tty txe txi txt tye typ tyt xee xep xet xex xie xii xit xix xpe xpp xpt xti xtp xtx xty xxi xxp xxx xxy xyp xyy yee yei yep yet yex yey yie yii yip yit yte ytp ytt yxe yxy yye yyt yyy