a-a a-b a-t aaa aab aam aan aao aap aat ab- aba abb abm abn abo abp abt ama amb amm amn amo amp amt an- ana anb anm ann ano anp ant aoa aob aom aon aoo aop aot ap- apa apb apm apn apo app apt at- ata atb atm atn ato atp att b-p baa bab bam ban bao bap bat bba bbb bbm bbn bbo bbp bbt bma bmb bmm bmn bmo bmp bmt bna bnb bnn bno bnp bnt boa bob bom bon boo bop bot bpa bpb bpm bpn bpo bpp bpt bta btb btm btn bto btp btt m-o maa mab mam man mao map mat mba mbb mbm mbo mbp mbt mma mmb mmm mmn mmo mmp mmt mna mnb mnm mnn mno mnp mnt moa mob mom mon moo mop mot mpa mpb mpm mpn mpo mpp mpt mta mtb mtm mtn mto mtp mtt naa nab nam nan nao nap nat nba nbb nbm nbn nbo nbp nbt nma nmb nmm nmn nmo nmp nmt nna nnb nnm nnn nno nnp nnt no- noa nob nom non noo nop not npa npb npm npn npo npp npt nta ntb ntm ntn nto ntp ntt oaa oab oam oan oao oap oat ob- oba obb obm obn obo obp obt om- oma omb omm omn omo omp omt on- ona onb onn ono onp ont oo- ooa oob oom oon ooo oop oot op- opa opb opm opn opo opp opt ot- ota otb otm otn oto otp ott p-p paa pab pam pan pao pap pat pba pbb pbm pbn pbo pbp pbt pma pmb pmm pmn pmo pmp pmt pn- pna pnb pnm pnn pno pnp pnt poa pob pom pon poo pop pot ppa ppb ppm ppn ppo ppp ppt pt- pta ptb ptm ptn pto ptp ptt taa tab tam tan tao tap tat tba tbb tbm tbn tbo tbp tbt tma tmb tmm tmn tmo tmp tmt tna tnb tnm tnn tno tnp tnt to- toa tob tom ton too top tot tpa tpb tpm tpn tpo tpp tpt tta ttb ttm ttn tto ttp ttt