-ey a-a a-b a-t aaa aab aae aap aat aay ab- aba abb abe abp abt aby aea aeb aee aep aet aey ap- apa apb ape app apt apy at- ata atb ate atp att ay- aya aye ayp ayt b-p baa bab bae bap bat bay bba bbb bbe bbp bbt bby be- bea beb bee bep bet bey bpa bpb bpe bpp bpt bpy bta btb bte btp btt bty by- bya bye byp byt eaa eab eae eap eat eba ebb ebe ebp ebt eby eea eeb eee eep eet eey ep- epa epb epe epp ept eta etb ete etp ett ety eya eye eyp eyt p-p paa pab pae pap pat pay pba pbb pbe pbp pbt pby pea peb pee pep pet pey ppa ppb ppe ppp ppt pt- pta ptb pte ptp ptt pty py- pya pyb pye pyt taa tab tae tap tat tay tba tbb tbe tbp tbt te- tea teb tee tep tet tey tpa tpb tpe tpp tpt tta ttb tte ttp ttt tty tya tye typ tyt yaa yab yae yap yat yay ybe ybp yby yea yeb yee yep yet yey ypa yta yte ytp ytt yyb yye yyt yyy