a-a a-i aaa aae aag aai aas aax aea aee aeg aei aes aex ag- aga age agg agi ags agx ai- aia aie aig aii ais aix as- asa ase asg asi ass asx ax- axa axe axi axs axx eaa eae eag eai eas eax eea eee eeg ees eex ega ege egg egi egs egx eia eie eig eii eis eix es- esa ese esg esi ess esx ex- exa exe exi exs exx gaa gae gag gai gas ge- gea gee geg gei ges gex gga ggg ggi ggs gia gie gig gii gis gsa gse gsg gsi gss gsx gxa gxs ia- iaa iae iag iai ias ie- iea iee ieg iei ies iex iga ige igg igi igs iia iie iii iis iix is- isa ise isg isi iss ixe ixi saa sae sag sai sas sax se- sea see seg sei ses sex sga sge sgg sgi sgs sgx sia sie sig sii sis six ss- ssa sse ssg ssi sss ssx sxi sxs xaa xag xas xee xeg xes xex xge xgi xia xie xii xis xix xsa xsi xss xxi xxx