a-a a-b a-t aaa aab aam aap aat aay ab- aba abb abm abp abt aby ama amb amm amp amt amy ap- apa apb apm app apt apy at- ata atb atm atp att ay- aya ayp ayt b-p baa bab bam bap bat bay bba bbb bbm bbp bbt bby bma bmb bmm bmp bmt bpa bpb bpm bpp bpt bpy bta btb btm btp btt bty by- bya bym byp byt maa mab mam map mat may mba mbb mbm mbp mbt mma mmb mmm mmp mmt mpa mpb mpm mpp mpt mta mtb mtm mtp mtt my- mya myb mym myt p-p paa pab pam pap pat pay pba pbb pbm pbp pbt pby pma pmb pmm pmp pmt ppa ppb ppm ppp ppt pt- pta ptb ptm ptp ptt pty py- pya pyb pym pyt taa tab tam tap tat tay tba tbb tbm tbp tbt tma tmb tmm tmp tmt tmy tpa tpb tpm tpp tpt tta ttb ttm ttp ttt tty tya tym typ tyt yaa yab yam yap yat yay ybm ybp yby yma ymm ymt ypa yta ytm ytp ytt yyb yyt yyy