-er -th a-a a-b a-t a-z aaa aab aae aah aar aat aaz ab- aba abb abe abh abr abt abz aea aeb aee aeh aer aet aez aha ahb ahe ahh ahr aht ahz ar- ara arb are arh arr art arz at- ata atb ate ath atr att atz az- aza azb aze azt azz baa bab bae bah bar bat baz bba bbb bbe bbh bbr bbt be- bea beb bee beh ber bet bez bha bhb bhe bhh bhr bht bra brb bre brh brr brt brz bta btb bte bth btr btt btz bza bze bzh bzr bzz eaa eab eae eah ear eat eaz eba ebb ebe ebh ebr ebt eea eeb eee eer eet eha ehb ehe ehh ehr eht era erb ere erh err ert erz eta etb ete eth etr ett etz eze ezh ezr ezz haa hab hae hah har hat haz hba hbb hbe hbh hbr hbt hbz he- hea heb hee heh her het hez hha hhb hhe hhh hhr hht hhz hr- hra hrb hre hrh hrr hrt hrz hta htb hte hth htr htt htz hze hzt ra- raa rab rae rah rar rat raz rba rbb rbe rbh rbr rbt re- rea reb ree reh rer ret rez rh- rha rhb rhe rhh rhr rht rra rrb rrh rrr rrt rta rtb rte rtr rtt rtz rza rzb rze taa tab tae tah tar tat taz tba tbb tbe tbh tbr tbt tbz te- tea teb tee teh ter tet tez th- tha thb the thh thr tht thz tra trb tre trh trr trt trz tta ttb tte tth ttr ttt tza tze zaa zab zah zar zat zaz zbb zbr zbt zea zeb zee zeh zer zet zez zha zhe zhr zrh zta zte ztr zzr zzt zzz