a-a a-i a-z aaa aad aae aaf aai aaz ad- ada add ade adf adi adz aea aed aee aef aei aez af- afa afd afe aff afi afz ai- aia aid aie aif aii aiz az- aza azd aze azf azi azz daa dad dae daf dai daz dda ddd dde ddf ddi ddz de- dea ded dee def dei dez dfa dfd dfe dff dfi dfz di- dia did die dif dii diz dza dzd dze dzi eaa ead eae eaf eai eaz ed- eda edd ede edf edi eea eed eee eef ef- efa efd efe eff efi eia eid eie eif eii eze ezf ezz faa fad fae faf fai faz fda fdd fde fdf fdi fea fed fee fef fei fez ffa ffd ffe fff ffi ffz fia fid fie fif fii fiz fzd i-d i-f ia- iaa iad iae iaf iai iaz ida idd ide idf idi ie- iea ied iee ief iei ifa ifd ife iff ifi ifz iia iid iie iif iii iza ize izi izz zaa zad zaf zai zaz zdf zea zed zee zef zez zfa zfd zia zid zie zif ziz zzz