-ey a-a a-i aaa aae aai aas aax aay aea aee aei aes aex aey ai- aia aie aii ais aix aiy as- asa ase asi ass asx asy ax- axa axe axi axs axx ay- aya aye ayi ays ayx eaa eae eai eas eax eea eee ees eex eey eia eie eii eis eix es- esa ese esi ess esx esy ex- exa exe exi exs exx exy eya eye eys ia- iaa iae iai ias ie- iea iee iei ies iex iey iia iie iii iis iix is- isa ise isi iss isy ixe ixi ixy iya iye iys iyy saa sae sai sas sax say se- sea see sei ses sex sey sia sie sii sis six ss- ssa sse ssi sss ssx sxi sxs sy- sya sye syi sys syx xaa xas xee xes xex xia xie xii xis xix xsa xsi xss xxi xxx xxy xyy yaa yae yai yas yax yay yea yee yei yes yex yey yie yii yis ysa yse ysi yss ysy yxa yxe yxy yye yys yyy