-er b-u bbb bbe bbi bbm bbr bbt bbu be- beb bee bei bem ber bet beu bi- bib bie bii bim bir bit biu bmb bme bmi bmm bmr bmt bmu brb bre bri brm brr brt bru btb bte bti btm btr btt btu bub bue bui bum bur but buu ebb ebe ebi ebm ebr ebt ebu eeb eee eem eer eet eib eie eii eim eir eit eiu em- emb eme emi emm emr emt emu erb ere eri erm err ert eru etb ete eti etm etr ett etu eu- eub eue eui eur eut ibb ibe ibi ibm ibr ibt ibu ie- iee iei iem ier iet iib iie iii iim iir iit iiu im- imb ime imi imm imt imu ir- irb ire iri irm irr irt iru itb ite iti itm itt itu iu- iub iue iui ium iur iut m-r mbb mbe mbi mbm mbr mbt mbu meb mee mei mem mer met meu mi- mib mie mii mim mir mit miu mmb mme mmi mmm mmr mmt mmu mrb mre mri mrm mrr mrt mru mtb mte mti mtm mtr mtt mtu mub mue mui mum mur mut muu rbb rbe rbi rbm rbr rbt rbu re- reb ree rei rem rer ret reu rib rie rii rim rir rit rmb rme rmi rmm rmr rmt rrb rri rrm rrr rrt rru rtb rte rti rtm rtr rtt rtu rub rue rui rum rur rut ruu tbb tbe tbi tbm tbr tbt tbu te- teb tee tei tem ter tet teu tib tie tii tim tir tit tiu tmb tme tmi tmm tmr tmt tmu trb tre tri trm trr trt tru ttb tte tti ttm ttr ttt ttu tub tue tui tum tur tut tuu ubb ube ubi ubr ubt ubu ueb uee uei uem uer uet uib uie uii uim uir uit uiu um- umb ume umi umm umr umt umu ur- urb ure uri urm urr urt uru utb ute uti utm utr utt utu uue uum uur uut uuu