a-a a-b a-i a-z aaa aab aae aai aak aam aaz ab- aba abb abe abi abk abm abz aea aeb aee aei aek aem aez ai- aia aib aie aii aik aim aiz aka akb ake aki akk akm ama amb ame ami amk amm amz az- aza azb aze azi azm azz baa bab bae bai bak bam baz bba bbb bbe bbi bbk bbm be- bea beb bee bei bek bem bez bi- bia bib bie bii bik bim biz bka bkb bke bkk bkm bma bmb bme bmi bmk bmm bmz bza bze bzz eaa eab eae eai eak eam eaz eba ebb ebe ebi ebk ebm eea eeb eee eek eem eia eib eie eii eik eim eka ekb eke eki em- ema emb eme emi emk emm eze ezz ia- iaa iab iae iai iam iaz iba ibb ibe ibi ibk ibm ibz ie- iea iee iei iek iem iia iib iie iii iim ika ikb ike iki ikk im- ima imb ime imi imm imz iza ize izi izm izz k-z ka- kaa kab kae kai kak kam kaz kba kbb kbe kbi kbk kbm kbz ke- kea keb kee kei kek kem kez kia kib kie kii kik kim kiz kkb kke kki kkk kkm kma kmb kme kmi kmk kmm kmz maa mab mae mai mak mam maz mba mbb mbe mbi mbk mbm mea meb mee mei mek mem mez mi- mia mib mie mii mik mim miz mka mkb mke mkk mkm mkz mma mmb mme mmi mmk mmm mmz mza mzb mzi mzm zaa zab zai zak zam zaz zbb zbm zea zeb zee zek zem zez zia zib zie zik zim ziz zka zma zmb zmk zmm zzz