a-a a-i aaa aae aai aak aas aax aea aee aei aek aes aex ai- aia aie aii aik ais aix aka ake aki akk aks as- asa ase asi ask ass asx ax- axa axe axi axk axs axx eaa eae eai eak eas eax eea eee eek ees eex eia eie eii eik eis eix eka eke eki eks es- esa ese esi esk ess esx ex- exa exe exi exs exx ia- iaa iae iai ias ie- iea iee iei iek ies iex iia iie iii iis iix ika ike iki ikk iks ikx is- isa ise isi isk iss ixe ixi ka- kaa kae kai kak kas kax ke- kea kee kei kek kes kex kia kie kii kik kis kix kke kki kkk kks ksa kse ksi ksk kss saa sae sai sak sas sax se- sea see sei sek ses sex sia sie sii sik sis six sk- ska ske ski skk sks skx ss- ssa sse ssi ssk sss ssx sxi sxs xaa xak xas xee xes xex xia xie xii xis xix xke xks xsa xsi xss xxi xxx