-er -ey a-a a-b a-t aaa aab aae aap aar aat aay ab- aba abb abe abp abr abt aby aea aeb aee aep aer aet aey ap- apa apb ape app apr apt apy ar- ara arb are arp arr art ary at- ata atb ate atp atr att ay- aya aye ayp ayr ayt b-p baa bab bae bap bar bat bay bba bbb bbe bbp bbr bbt bby be- bea beb bee bep ber bet bey bpa bpb bpe bpp bpr bpt bpy bra brb bre brp brr brt bry bta btb bte btp btr btt bty by- bya bye byp byr byt eaa eab eae eap ear eat eba ebb ebe ebp ebr ebt eby eea eeb eee eep eer eet eey ep- epa epb epe epp epr ept era erb ere erp err ert ery eta etb ete etp etr ett ety eya eye eyp eyr eyt p-p paa pab pae pap par pat pay pba pbb pbe pbp pbr pbt pby pea peb pee pep per pet pey ppa ppb ppe ppp ppr ppt pra prb pre prp prr prt pry pt- pta ptb pte ptp ptr ptt pty py- pya pyb pye pyr pyt ra- raa rab rae rap rar rat ray rba rbb rbe rbp rbr rbt re- rea reb ree rep rer ret rey rpa rpb rpe rpp rpr rpt rra rrb rrp rrr rrt rta rtb rte rtp rtr rtt rty ry- rya rye ryr ryy taa tab tae tap tar tat tay tba tbb tbe tbp tbr tbt te- tea teb tee tep ter tet tey tpa tpb tpe tpp tpr tpt tra trb tre trp trr trt try tta ttb tte ttp ttr ttt tty tya tye typ tyr tyt yaa yab yae yap yar yat yay ybe ybp ybr yby yea yeb yee yep yer yet yey ypa yra yre yrp yrt yta yte ytp ytr ytt yyb yye yyt yyy