a-a a-b a-t a-z aaa aab aam aan aao aar aat aaz ab- aba abb abm abn abo abr abt abz ama amb amm amn amo amr amt amz an- ana anb anm ann ano anr ant anz aoa aob aom aon aoo aor aot ar- ara arb arm arn aro arr art arz at- ata atb atm atn ato atr att atz az- aza azb azm azn azo azt azz baa bab bam ban bao bar bat baz bba bbb bbm bbn bbo bbr bbt bma bmb bmm bmn bmo bmr bmt bmz bna bnb bnn bno bnr bnt bnz boa bob bom bon boo bor bot boz bra brb brm brn bro brr brt brz bta btb btm btn bto btr btt btz bza bzn bzo bzr bzz m-o m-r maa mab mam man mao mar mat maz mba mbb mbm mbo mbr mbt mma mmb mmm mmn mmo mmr mmt mmz mna mnb mnm mnn mno mnr mnt mnz moa mob mom mon moo mor mot moz mra mrb mrm mrn mro mrr mrt mrz mta mtb mtm mtn mto mtr mtt mza mzb mzm mzn mzt naa nab nam nan nao nar nat naz nba nbb nbm nbn nbo nbr nbt nma nmb nmm nmn nmo nmr nmt nmz nna nnb nnm nnn nno nnt nnz no- noa nob nom non noo nor not noz nra nrb nrm nrn nro nrr nrt nrz nta ntb ntm ntn nto ntr ntt ntz nzb nzo nzz oaa oab oam oan oao oar oat ob- oba obb obm obn obo obr obt om- oma omb omm omn omo omr omt omz on- ona onb onn ono onr ont oo- ooa oob oom oon ooo oor oot or- ora orb orm orn oro orr ort orz ot- ota otb otm otn oto otr ott otz oza ozm ozo ozt ozz ra- raa rab ram ran rao rar rat raz rba rbb rbm rbn rbo rbr rbt rma rmb rmm rmn rmo rmr rmt rna rnb rnm rnn rno rnr rnt rnz roa rob rom ron roo ror rot roz rra rrb rrm rrn rrr rrt rta rtb rtm rtn rto rtr rtt rtz rza rzb rzm rzo taa tab tam tan tao tar tat taz tba tbb tbm tbn tbo tbr tbt tbz tma tmb tmm tmn tmo tmr tmt tmz tna tnb tnm tnn tno tnr tnt tnz to- toa tob tom ton too tor tot toz tra trb trm trn tro trr trt trz tta ttb ttm ttn tto ttr ttt tza zaa zab zam zan zao zar zat zaz zbb zbm zbr zbt zma zmb zmm zmt znn zno zo- zoa zob zom zon zoo zor zot zro zta ztm ztr zzr zzt zzz