a-a a-b a-c a-t a-z aaa aab aac aam aan aat aau aaz ab- aba abb abc abm abn abt abu abz ac- aca acb acc acm acn act acu acz ama amb amc amm amn amt amu amz an- ana anb anc anm ann ant anu anz at- ata atb atc atm atn att atu atz au- aua aub auc aum aun aut auz az- aza azb azm azn azt azu azz b-u baa bab bac bam ban bat bau baz bba bbb bbc bbm bbn bbt bbu bca bcb bcc bcm bcn bct bcu bcz bma bmb bmc bmm bmn bmt bmu bmz bna bnb bnc bnn bnt bnu bnz bta btb btc btm btn btt btu btz bua bub buc bum bun but buu buz bza bzn bzu bzz c-- caa cab cac cam can cat cau caz cba cbb cbc cbm cbn cbt cbu cbz cca ccb ccc ccm ccn cct ccu ccz cma cmb cmc cmm cmn cmt cmu cn- cna cnb cnc cnm cnn cnt cnu cta ctb ctc ctm ctn ctt ctu ctz cua cub cuc cum cun cut cuu cuz cz- czc czm czt maa mab mac mam man mat mau maz mba mbb mbc mbm mbt mbu mc- mca mcb mcc mcm mcn mct mcu mcz mma mmb mmc mmm mmn mmt mmu mmz mna mnb mnc mnm mnn mnt mnu mnz mta mtb mtc mtm mtn mtt mtu mua mub muc mum mun mut muu mza mzb mzm mzn mzt naa nab nac nam nan nat nau naz nba nbb nbc nbm nbn nbt nbu nca ncb ncc ncm ncn nct ncu nma nmb nmc nmm nmn nmt nmu nmz nna nnb nnc nnm nnn nnt nnu nnz nta ntb ntc ntm ntn ntt ntu ntz nua nub nuc num nun nut nuu nzb nzz taa tab tac tam tan tat tau taz tba tbb tbc tbm tbn tbt tbu tbz tca tcb tcc tcm tcn tct tcu tma tmb tmc tmm tmn tmt tmu tmz tna tnb tnc tnm tnn tnt tnz tta ttb ttc ttm ttn ttt ttu tua tub tuc tum tun tut tuu tuz tza tzu ua- uaa uab uac uam uan uat uau uaz uba ubb ubc ubn ubt ubu uca ucb ucc ucm ucn uct ucu um- uma umb umc umm umn umt umu un- una unb unc unm unn unt unu uta utb utc utm utn utt utu utz uua uuc uum uun uut uuu uza uzb uzu zaa zab zac zam zan zat zaz zbb zbc zbm zbt zma zmb zmc zmm zmt znc znn zta ztm zub zuc zum zun zut zuz zzt zzz