a-a a-b aaa aab aam aan aap aay ab- aba abb abm abn abp aby ama amb amm amn amp amy an- ana anb anm ann anp any ap- apa apb apm apn app apy ay- aya ayn ayp b-p baa bab bam ban bap bay bba bbb bbm bbn bbp bby bma bmb bmm bmn bmp bna bnb bnn bnp bpa bpb bpm bpn bpp bpy by- bya bym byn byp maa mab mam man map may mba mbb mbm mbp mma mmb mmm mmn mmp mna mnb mnm mnn mnp mpa mpb mpm mpn mpp my- mya myb mym myn naa nab nam nan nap nay nba nbb nbm nbn nbp nma nmb nmm nmn nmp nna nnb nnm nnn nnp npa npb npm npn npp nya nym nyn nyp nyy p-p paa pab pam pan pap pay pba pbb pbm pbn pbp pby pma pmb pmm pmn pmp pn- pna pnb pnm pnn pnp pny ppa ppb ppm ppn ppp py- pya pyb pym pyn yaa yab yam yan yap yay ybm ybp yby yma ymm yna ynn ynp yny ypa yyb yyy