-er a-a a-i a-z aaa aad aae aaf aai aar aaz ad- ada add ade adf adi adr adz aea aed aee aef aei aer aez af- afa afd afe aff afi afr afz ai- aia aid aie aif aii air aiz ar- ara ard are arf ari arr arz az- aza azd aze azf azi azz daa dad dae daf dai dar daz dda ddd dde ddf ddi ddr ddz de- dea ded dee def dei der dez dfa dfd dfe dff dfi dfr dfz di- dia did die dif dii dir diz dra drd dre dri drr drz dza dzd dze dzi dzr eaa ead eae eaf eai ear eaz ed- eda edd ede edf edi edr eea eed eee eef eer ef- efa efd efe eff efi efr eia eid eie eif eii eir era erd ere erf eri err erz eze ezf ezr ezz faa fad fae faf fai far faz fda fdd fde fdf fdi fdr fea fed fee fef fei fer fez ffa ffd ffe fff ffi ffr ffz fia fid fie fif fii fir fiz fra frd fre frf fri frr fzd i-d i-f ia- iaa iad iae iaf iai iar iaz ida idd ide idf idi idr ie- iea ied iee ief iei ier ifa ifd ife iff ifi ifr ifz iia iid iie iif iii iir ir- ira ird ire irf iri irr iza ize izi izz ra- raa rad rae raf rai rar raz rda rdd rde rdf rdi rdr re- rea red ree ref rei rer rez rfa rfd rfe rff rfi rfr rfz ria rid rie rif rii rir riz rra rrd rrf rri rrr rza rze zaa zad zaf zai zar zaz zdf zea zed zee zef zer zez zfa zfd zfr zia zid zie zif zir ziz zzr zzz