a-a a-b a-i a-z aaa aab aai aak aan aas aaz ab- aba abb abi abk abn abs abz ai- aia aib aii aik ain ais aiz aka akb aki akk akn aks an- ana anb ani ank ann ans anz as- asa asb asi ask asn ass asz az- aza azb azi azn azs azz baa bab bai bak ban bas baz bba bbb bbi bbk bbn bbs bi- bia bib bii bik bin bis biz bka bkb bkk bkn bks bna bnb bni bnk bnn bns bnz bsa bsb bsi bsk bsn bss bza bzn bzs bzz ia- iaa iab iai ian ias iaz iba ibb ibi ibk ibn ibs ibz iia iib iii iin iis ika ikb iki ikk iks in- ina inb ini ink inn ins is- isa isb isi isk isn iss iza izi izz k-z ka- kaa kab kai kak kan kas kaz kba kbb kbi kbk kbn kbs kbz kia kib kii kik kin kis kiz kkb kki kkk kkn kks kn- kna kni knk knn ksa ksb ksi ksk ksn kss n-i naa nab nai nak nan nas naz nba nbb nbi nbk nbn nbs nia nib nii nik nin nis niz nka nki nkk nkn nks nna nnb nni nnk nnn nns nnz nsa nsb nsi nsk nsn nss nsz nzb nzi nzs nzz saa sab sai sak san sas saz sba sbb sbi sbk sbn sbs sia sib sii sik sin sis sk- ska skb ski skk sks sna snb sni snk snn sns ss- ssa ssb ssi ssk ssn sss ssz sza szi zaa zab zai zak zan zas zaz zbb zbs zia zib zik zin zis ziz zka zks znn zns zsa zsi zsz zzs zzz