a-a a-b a-t aaa aab aam aap aar aat aay ab- aba abb abm abp abr abt aby ama amb amm amp amr amt amy ap- apa apb apm app apr apt apy ar- ara arb arm arp arr art ary at- ata atb atm atp atr att ay- aya ayp ayr ayt b-p baa bab bam bap bar bat bay bba bbb bbm bbp bbr bbt bby bma bmb bmm bmp bmr bmt bpa bpb bpm bpp bpr bpt bpy bra brb brm brp brr brt bry bta btb btm btp btr btt bty by- bya bym byp byr byt m-r maa mab mam map mar mat may mba mbb mbm mbp mbr mbt mma mmb mmm mmp mmr mmt mpa mpb mpm mpp mpr mpt mra mrb mrm mrp mrr mrt mry mta mtb mtm mtp mtr mtt my- mya myb mym myr myt p-p paa pab pam pap par pat pay pba pbb pbm pbp pbr pbt pby pma pmb pmm pmp pmr pmt ppa ppb ppm ppp ppr ppt pra prb prm prp prr prt pry pt- pta ptb ptm ptp ptr ptt pty py- pya pyb pym pyr pyt ra- raa rab ram rap rar rat ray rba rbb rbm rbp rbr rbt rma rmb rmm rmp rmr rmt rpa rpb rpm rpp rpr rpt rra rrb rrm rrp rrr rrt rta rtb rtm rtp rtr rtt rty ry- rya rym ryr ryy taa tab tam tap tar tat tay tba tbb tbm tbp tbr tbt tma tmb tmm tmp tmr tmt tmy tpa tpb tpm tpp tpr tpt tra trb trm trp trr trt try tta ttb ttm ttp ttr ttt tty tya tym typ tyr tyt yaa yab yam yap yar yat yay ybm ybp ybr yby yma ymm ymt ypa yra yrp yrt yta ytm ytp ytr ytt yyb yyt yyy