a-a a-b a-z aaa aab aae aah aam aaz ab- aba abb abe abh abm abz aea aeb aee aeh aem aez aha ahb ahe ahh ahm ahz ama amb ame amh amm amz az- aza azb aze azm azz baa bab bae bah bam baz bba bbb bbe bbh bbm be- bea beb bee beh bem bez bha bhb bhe bhh bhm bma bmb bme bmh bmm bmz bza bze bzh bzz eaa eab eae eah eam eaz eba ebb ebe ebh ebm eea eeb eee eem eha ehb ehe ehh ehm em- ema emb eme emh emm eze ezh ezz haa hab hae hah ham haz hba hbb hbe hbh hbm hbz he- hea heb hee heh hem hez hha hhb hhe hhh hhm hhz hma hmb hme hmh hmm hmz hze maa mab mae mah mam maz mba mbb mbe mbh mbm mea meb mee meh mem mez mha mhh mhm mhz mma mmb mme mmh mmm mmz mza mzb mzm zaa zab zah zam zaz zbb zbm zea zeb zee zeh zem zez zha zhe zma zmb zmm zzz