-er a-a a-i a-z aaa aae aaf aai aar aaz aea aee aef aei aer aez af- afa afe aff afi afr afz ai- aia aie aif aii air aiz ar- ara are arf ari arr arz az- aza aze azf azi azz eaa eae eaf eai ear eaz eea eee eef eer ef- efa efe eff efi efr eia eie eif eii eir era ere erf eri err erz eze ezf ezr ezz faa fae faf fai far faz fea fee fef fei fer fez ffa ffe fff ffi ffr ffz fia fie fif fii fir fiz fra fre frf fri frr i-f ia- iaa iae iaf iai iar iaz ie- iea iee ief iei ier ifa ife iff ifi ifr ifz iia iie iif iii iir ir- ira ire irf iri irr iza ize izi izz ra- raa rae raf rai rar raz re- rea ree ref rei rer rez rfa rfe rff rfi rfr rfz ria rie rif rii rir riz rra rrf rri rrr rza rze zaa zaf zai zar zaz zea zee zef zer zez zfa zfr zia zie zif zir ziz zzr zzz