-er -th bbb bbe bbh bbr bbt bbw be- beb bee beh ber bet bew bhb bhe bhh bhr bht bhw brb bre brh brr brt brw btb bte bth btr btt btw bwb bwh bwr ebb ebe ebh ebr ebt ebw eeb eee eer eet eew ehb ehe ehh ehr eht erb ere erh err ert erw etb ete eth etr ett etw ewb ewe ewr ewt eww hbb hbe hbh hbr hbt hbw he- heb hee heh her het hew hhb hhe hhh hhr hht hhw hr- hrb hre hrh hrr hrt hrw htb hte hth htr htt htw hw- hwb hwe hwr hwt hww rbb rbe rbh rbr rbt rbw re- reb ree reh rer ret rew rh- rhb rhe rhh rhr rht rrb rrh rrr rrt rtb rte rtr rtt rtw rwb rwe rwh rwr tbb tbe tbh tbr tbt te- teb tee teh ter tet tew th- thb the thh thr tht thw trb tre trh trr trt trw ttb tte tth ttr ttt ttw twb twe twh twr twt tww wbb wbe wbr wbt wbw web wee weh wer wet wew wh- whb whh whr wht whw wr- wre wrh wrr wrt wrw wtb wth wtr wtt wtw wwe wwt www