a-a a-b a-i a-z aaa aab aai aan aas aaz ab- aba abb abi abn abs abz ai- aia aib aii ain ais aiz an- ana anb ani ann ans anz as- asa asb asi asn ass asz az- aza azb azi azn azs azz baa bab bai ban bas baz bba bbb bbi bbn bbs bi- bia bib bii bin bis biz bna bnb bni bnn bns bnz bsa bsb bsi bsn bss bza bzn bzs bzz ia- iaa iab iai ian ias iaz iba ibb ibi ibn ibs ibz iia iib iii iin iis in- ina inb ini inn ins is- isa isb isi isn iss iza izi izz n-i naa nab nai nan nas naz nba nbb nbi nbn nbs nia nib nii nin nis niz nna nnb nni nnn nns nnz nsa nsb nsi nsn nss nsz nzb nzi nzs nzz saa sab sai san sas saz sba sbb sbi sbn sbs sia sib sii sin sis sna snb sni snn sns ss- ssa ssb ssi ssn sss ssz sza szi zaa zab zai zan zas zaz zbb zbs zia zib zin zis ziz znn zns zsa zsi zsz zzs zzz