a-a a-b a-c a-z aaa aab aac aaj aam aao aaz ab- aba abb abc abj abm abo abz ac- aca acb acc acj acm aco acz aja ajb ajc ajj ajm ajo ama amb amc amm amo amz aoa aob aoc aoj aom aoo az- aza azb azm azo azz baa bab bac baj bam bao baz bba bbb bbc bbm bbo bca bcb bcc bcj bcm bco bcz bja bjc bjj bjm bma bmb bmc bmj bmm bmo bmz boa bob boc boj bom boo boz bza bzo bzz c-- c-j caa cab cac caj cam cao caz cba cbb cbc cbj cbm cbo cbz cca ccb ccc ccj ccm cco ccz cja cjb cjc cma cmb cmc cmj cmm cmo co- coa cob coc coj com coo coz cz- czc czj czm czo j-z jaa jab jac jaj jam jao jaz jba jbc jbj jbm jbo jbz jca jcb jcc jcm jco jja jjb jjc jjj jma jmb jmc jmj jmm jmo joa job joc joj jom joo m-o maa mab mac maj mam mao maz mba mbb mbc mbj mbm mbo mc- mca mcb mcc mcm mco mcz mjb mjc mjj mjm mma mmb mmc mmj mmm mmo mmz moa mob moc mom moo moz mza mzb mzm oaa oab oac oaj oam oao ob- oba obb obc obj obm obo oc- oca ocb occ ocj ocm oco ocz oja ojb ojc ojm ojo om- oma omb omc omj omm omo omz oo- ooa oob ooc oom ooo oza ozm ozo ozz zaa zab zac zaj zam zao zaz zbb zbc zbm zco zma zmb zmc zmm zo- zoa zob zoc zom zoo zzz