a-a a-b a-z aaa aab aam aan aao aas aaz ab- aba abb abm abn abo abs abz ama amb amm amn amo ams amz an- ana anb anm ann ano ans anz aoa aob aom aon aoo aos as- asa asb asm asn aso ass asz az- aza azb azm azn azo azs azz baa bab bam ban bao bas baz bba bbb bbm bbn bbo bbs bma bmb bmm bmn bmo bms bmz bna bnb bnn bno bns bnz boa bob bom bon boo bos boz bsa bsb bsm bsn bso bss bza bzn bzo bzs bzz m-o maa mab mam man mao mas maz mba mbb mbm mbo mbs mma mmb mmm mmn mmo mms mmz mna mnb mnm mnn mno mns mnz moa mob mom mon moo mos moz msa msb msm msn mso mss mza mzb mzm mzn naa nab nam nan nao nas naz nba nbb nbm nbn nbo nbs nma nmb nmm nmn nmo nms nmz nna nnb nnm nnn nno nns nnz no- noa nob nom non noo nos noz nsa nsb nsm nsn nso nss nsz nzb nzo nzs nzz oaa oab oam oan oao oas ob- oba obb obm obn obo obs om- oma omb omm omn omo oms omz on- ona onb onn ono ons oo- ooa oob oom oon ooo oos os- osa osb osm osn oso oss oza ozm ozo ozs ozz saa sab sam san sao sas saz sba sbb sbm sbn sbo sbs sma smb smm smn smo sms smz sna snb snm snn sno sns soa sob som son soo sos soz ss- ssa ssb ssm ssn sso sss ssz sza zaa zab zam zan zao zas zaz zbb zbm zbs zma zmb zmm zms znn zno zns zo- zoa zob zom zon zoo zos zsa zsm zsz zzs zzz