a-a a-i aaa aad aai aan aax ad- ada add adi adn adx ai- aia aid aii ain aix an- ana and ani ann anx ax- axa axi axn axx daa dad dai dan dax dda ddd ddi ddn ddx di- dia did dii din dix dna dnd dni dnn dxd dxi dxn dxx i-d ia- iaa iad iai ian ida idd idi idn idx iia iid iii iin iix in- ina ind ini inn inx ixi ixn n-i naa nad nai nan nax nda ndd ndi ndn nia nid nii nin nix nna nni nnn nxd xaa xad xan xda xdi xia xii xin xix xna xxi xxx