a-ii aaaa aaaf aaai aafa aaff aafi aaii aaoo afaa afao affa affi affo afgf afia afif afig afoa afog afoo ag-o agag agai agao agfa agga aggi agia agig agii agio agog agoo aiai aiff aiga aigo aiia aioi faaa fafa faff fafg fafi fafo fagg fagi fago faio ffff ffii fiaa fiaf fifa fiff fifi fifo figa figg figo fiii foaf fofo fogg fogi fogo foia foof gafa gaff gafi gaga gagg gagi gago gaia gaig gffa gfoa ggfg gggg giaa giai giff giga gigg gigi gigo giog gioi goaf goai goff goga gogi gogo goif goof goog gooi i-go iaaa iaai iaff iago iaia ifaa ifao igfa igga igia igoo iifa iiii iiio iioi iioo ioii ioio ioof iooi iooo oafo off- offa offo ofgo ogai oggi ogoa ogog ogoi oigo oiii ooaa ooff ooia oooo