a-a a-i aaa aai aan aar aax ai- aia aii ain air aix an- ana ani ann anr anx ar- ara ari arn arr arx ax- axa axi axn axr axx ia- iaa iai ian iar iia iii iin iir iix in- ina ini inn inr inx ir- ira iri irn irr irx ixi ixn n-i naa nai nan nar nax nia nii nin nir nix nna nni nnn nra nri nrn nrr nrx ra- raa rai ran rar rax ria rii rin rir rix rna rni rnn rnr rra rri rrn rrr rxr xaa xan xar xia xii xin xix xna xrx xxi xxx