a-ii aaaa aaad aaaf aaai aada aadi aafa aafd aaff aafi aaii adaa adad adai adda addd addi adfa adia adif afaa afad afdx affa affi afia afid afif afix aiai aida aidi aifd aiff aiia aiid aixa aixi axaf axi- axia d-ix daad dada dadi dafa daff dafi daia daid daix dddd dfaf dffa dia- diad diaf diax dida didi dif- difa diff diii dixi dxfx dxif dxii dxix dxxx faaa faad fada fadd fadi fafa faff fafi faid faix faxi ffff ffii fiaa fiad fiaf fida fidf fifa fiff fifi fiii fixx fxdd iaaa iaai iaff iaia idad idda idfa idia idid ifaa ifda ifid iida iifa iiii ixia ixxi x-fi xdxf xidi xiii xixi xxii xxix xxxi xxxx