a-a a-b a-c a-t aaa aab aac aam aao aap aat ab- aba abb abc abm abo abp abt ac- aca acb acc acm aco acp act ama amb amc amm amo amp amt aoa aob aoc aom aoo aop aot ap- apa apb apc apm apo app apt at- ata atb atc atm ato atp att b-p baa bab bac bam bao bap bat bba bbb bbc bbm bbo bbp bbt bca bcb bcc bcm bco bcp bct bma bmb bmc bmm bmo bmp bmt boa bob boc bom boo bop bot bpa bpb bpc bpm bpo bpp bpt bta btb btc btm bto btp btt c-- caa cab cac cam cao cap cat cba cbb cbc cbm cbo cbp cbt cca ccb ccc ccm cco ccp cct cma cmb cmc cmm cmo cmp cmt co- coa cob coc com coo cop cot cpa cpb cpc cpm cpo cpp cpt cta ctb ctc ctm cto ctp ctt m-o maa mab mac mam mao map mat mba mbb mbc mbm mbo mbp mbt mc- mca mcb mcc mcm mco mcp mct mma mmb mmc mmm mmo mmp mmt moa mob moc mom moo mop mot mpa mpb mpc mpm mpo mpp mpt mta mtb mtc mtm mto mtp mtt oaa oab oac oam oao oap oat ob- oba obb obc obm obo obp obt oc- oca ocb occ ocm oco ocp oct om- oma omb omc omm omo omp omt oo- ooa oob ooc oom ooo oop oot op- opa opb opc opm opo opp opt ot- ota otb otc otm oto otp ott p-p paa pab pac pam pao pap pat pba pbb pbc pbm pbo pbp pbt pca pcb pcc pcm pco pcp pct pma pmb pmc pmm pmo pmp pmt poa pob poc pom poo pop pot ppa ppb ppc ppm ppo ppp ppt pt- pta ptb ptc ptm pto ptp ptt taa tab tac tam tao tap tat tba tbb tbc tbm tbo tbp tbt tca tcb tcc tcm tco tcp tct tma tmb tmc tmm tmo tmp tmt to- toa tob toc tom too top tot tpa tpb tpc tpm tpo tpp tpt tta ttb ttc ttm tto ttp ttt