a-a a-b a-i a-t aaa aab aai aam aap aat ab- aba abb abi abm abp abt ai- aia aib aii aim aip ait ama amb ami amm amp amt ap- apa apb api apm app apt at- ata atb ati atm atp att b-p baa bab bai bam bap bat bba bbb bbi bbm bbp bbt bi- bia bib bii bim bip bit bma bmb bmi bmm bmp bmt bpa bpb bpi bpm bpp bpt bta btb bti btm btp btt ia- iaa iab iai iam iap iat iba ibb ibi ibm ibp ibt iia iib iii iim iip iit im- ima imb imi imm imp imt ipa ipb ipi ipm ipp ipt ita itb iti itm itp itt maa mab mai mam map mat mba mbb mbi mbm mbp mbt mi- mia mib mii mim mip mit mma mmb mmi mmm mmp mmt mpa mpb mpi mpm mpp mpt mta mtb mti mtm mtp mtt p-p paa pab pai pam pap pat pba pbb pbi pbm pbp pbt pia pib pii pim pip pit pma pmb pmi pmm pmp pmt ppa ppb ppi ppm ppp ppt pt- pta ptb pti ptm ptp ptt taa tab tai tam tap tat tba tbb tbi tbm tbp tbt tia tib tii tim tip tit tma tmb tmi tmm tmp tmt tpa tpb tpi tpm tpp tpt tta ttb tti ttm ttp ttt