-er -ey -th a-a a-b a-t aaa aab aae aah aar aat aay ab- aba abb abe abh abr abt aby aea aeb aee aeh aer aet aey aha ahb ahe ahh ahr aht ahy ar- ara arb are arh arr art ary at- ata atb ate ath atr att ay- aya aye ayh ayr ayt baa bab bae bah bar bat bay bba bbb bbe bbh bbr bbt bby be- bea beb bee beh ber bet bey bha bhb bhe bhh bhr bht bra brb bre brh brr brt bry bta btb bte bth btr btt bty by- bya bye byh byr byt eaa eab eae eah ear eat eba ebb ebe ebh ebr ebt eby eea eeb eee eer eet eey eha ehb ehe ehh ehr eht era erb ere erh err ert ery eta etb ete eth etr ett ety eya eye eyr eyt haa hab hae hah har hat hay hba hbb hbe hbh hbr hbt hby he- hea heb hee heh her het hey hha hhb hhe hhh hhr hht hhy hr- hra hrb hre hrh hrr hrt hta htb hte hth htr htt hty hy- hya hyb hye hyh hyr hyt hyy ra- raa rab rae rah rar rat ray rba rbb rbe rbh rbr rbt re- rea reb ree reh rer ret rey rh- rha rhb rhe rhh rhr rht rra rrb rrh rrr rrt rta rtb rte rtr rtt rty ry- rya rye ryr ryy taa tab tae tah tar tat tay tba tbb tbe tbh tbr tbt te- tea teb tee teh ter tet tey th- tha thb the thh thr tht thy tra trb tre trh trr trt try tta ttb tte tth ttr ttt tty tya tye tyr tyt yaa yab yae yah yar yat yay ybe ybr yby yea yeb yee yeh yer yet yey yha yhe yht yra yre yrt yta yte yth ytr ytt yyb yye yyt yyy