a-a a-b a-z aaa aab aam aar aas aaz ab- aba abb abm abr abs abz ama amb amm amr ams amz ar- ara arb arm arr ars arz as- asa asb asm asr ass asz az- aza azb azm azs azz baa bab bam bar bas baz bba bbb bbm bbr bbs bma bmb bmm bmr bms bmz bra brb brm brr brs brz bsa bsb bsm bsr bss bza bzr bzs bzz m-r maa mab mam mar mas maz mba mbb mbm mbr mbs mma mmb mmm mmr mms mmz mra mrb mrm mrr mrs mrz msa msb msm msr mss mza mzb mzm ra- raa rab ram rar ras raz rba rbb rbm rbr rbs rma rmb rmm rmr rms rra rrb rrm rrr rrs rsa rsb rsm rsr rss rza rzb rzm saa sab sam sar sas saz sba sbb sbm sbr sbs sma smb smm smr sms smz sr- sra srb srm srr srs ss- ssa ssb ssm ssr sss ssz sza szr zaa zab zam zar zas zaz zbb zbm zbr zbs zma zmb zmm zms zrs zsa zsm zsz zzr zzs zzz