a-a a-b a-z aaa aab aam aan aas aaz ab- aba abb abm abn abs abz ama amb amm amn ams amz an- ana anb anm ann ans anz as- asa asb asm asn ass asz az- aza azb azm azn azs azz baa bab bam ban bas baz bba bbb bbm bbn bbs bma bmb bmm bmn bms bmz bna bnb bnn bns bnz bsa bsb bsm bsn bss bza bzn bzs bzz maa mab mam man mas maz mba mbb mbm mbs mma mmb mmm mmn mms mmz mna mnb mnm mnn mns mnz msa msb msm msn mss mza mzb mzm mzn naa nab nam nan nas naz nba nbb nbm nbn nbs nma nmb nmm nmn nms nmz nna nnb nnm nnn nns nnz nsa nsb nsm nsn nss nsz nzb nzs nzz saa sab sam san sas saz sba sbb sbm sbn sbs sma smb smm smn sms smz sna snb snm snn sns ss- ssa ssb ssm ssn sss ssz sza zaa zab zam zan zas zaz zbb zbm zbs zma zmb zmm zms znn zns zsa zsm zsz zzs zzz