-ey eee eek ees eex eey ehe ehh ehi ehs eie eii eik eis eix eke ekh eki eks eky es- ese esh esi esk ess esx esy ex- exe exh exi exs exx exy eye eys h-i he- hee heh hei hek hes hex hey hhe hhh hhi hhk hhs hhy hie hih hii hik his hix hkh hki hkk hks hse hsh hsi hsk hss hsx hsy hy- hye hyh hyi hys hyy ie- iee iei iek ies iex iey ihe ihh ihi ihk ihs ihy iie iih iii iis iix ike iki ikk iks ikx is- ise ish isi isk iss isy ixe ixi ixy iye iys iyy ke- kee keh kei kek kes kex key khe khh khi khk khs kie kih kii kik kis kix kke kkh kki kkk kks kky kse ksh ksi ksk kss kxy kye kys kyx se- see seh sei sek ses sex sey sh- she shh shi shk shs shy sie sih sii sik sis six sk- ske skh ski skk sks skx sky ss- sse ssh ssi ssk sss ssx sxi sxs sy- sye syh syi syk sys syx xee xes xex xie xii xis xix xke xks xsi xss xxi xxx xxy xyy yee yeh yei yek yes yex yey yhe yhi yhs yie yih yii yis yki ykk yse ysi ysk yss ysy yxe yxy yye yys yyy