a-a a-z aaa aad aae aau aaz ad- ada add ade adu adz aea aed aee aeu aez au- aua aud aue auz az- aza azd aze azu azz daa dad dae dau daz dda ddd dde ddu ddz de- dea ded dee deu dez dua dud due duz dza dzd dze dzu eaa ead eae eau eaz ed- eda edd ede edu eea eed eee eu- eua eud eue eze ezz ua- uaa uad uae uau uaz uda udd ude udu uea ued uee uua uue uuu uza uzu zaa zad zaz zea zed zee zez zud zuz zzz