a-a a-i aaa aag aai aar aax ag- aga agg agi agr agx ai- aia aig aii air aix ar- ara arg ari arr arx ax- axa axi axr axx gaa gag gai gar gga ggg ggi ggr gia gig gii gir gra grg gri grr grx gxa ia- iaa iag iai iar iga igg igi igr iia iii iir iix ir- ira irg iri irr irx ixi ra- raa rag rai rar rax rga rgg rgi rgr rgx ria rig rii rir rix rra rrg rri rrr rxr xaa xag xar xgi xia xii xix xrx xxi xxx