-er b-u bbb bbd bbe bbi bbr bbt bbu bdb bdd bde bdi bdr bdt bdu be- beb bed bee bei ber bet beu bi- bib bid bie bii bir bit biu brb brd bre bri brr brt bru btb btd bte bti btr btt btu bub bud bue bui bur but buu dbb dbd dbe dbi dbr dbt dbu ddb ddd dde ddi ddr ddt ddu de- deb ded dee dei der det deu di- dib did die dii dir dit diu drb drd dre dri drr drt dru dtb dtd dte dti dtr dtt dtu dub dud due dui dur dut ebb ebd ebe ebi ebr ebt ebu ed- edb edd ede edi edr edt edu eeb eed eee eer eet eib eid eie eii eir eit eiu erb erd ere eri err ert eru etb etd ete eti etr ett etu eu- eub eud eue eui eur eut i-d ibb ibd ibe ibi ibr ibt ibu idb idd ide idi idr idt idu ie- ied iee iei ier iet iib iid iie iii iir iit iiu ir- irb ird ire iri irr irt iru itb itd ite iti itt itu iu- iub iud iue iui iur iut rbb rbd rbe rbi rbr rbt rbu rdb rdd rde rdi rdr rdt rdu re- reb red ree rei rer ret reu rib rid rie rii rir rit rrb rrd rri rrr rrt rru rtb rtd rte rti rtr rtt rtu rub rud rue rui rur rut ruu tbb tbd tbe tbi tbr tbt tbu tdb tdd tde tdi tdr tdt tdu te- teb ted tee tei ter tet teu tib tid tie tii tir tit tiu trb trd tre tri trr trt tru ttb ttd tte tti ttr ttt ttu tub tud tue tui tur tut tuu ubb ube ubi ubr ubt ubu udb udd ude udi udr udt udu ueb ued uee uei uer uet uib uid uie uii uir uit uiu ur- urb urd ure uri urr urt uru utb utd ute uti utr utt utu uue uur uut uuu

bbbb bbdd bbeb bbet bd-r bdii bebb bebe bebi bede bedi bedu beeb beed beer beet beir beit berd bere beri berr bert beru bete beti bett betu beur bibb bibe bibi bide bidi bidr bidu bieb bied bier biet bieu birb bird bire biri birr birt biru bitd bite bitt bitu brdt breb bred bree brei brer bret brid brie brit brrr brud brue brut btdt btie btrt bttb bubb bube bubi bubu budb budd bude budi budu buer bueu buid buie buir buit buiu bur- burb burd bure buri burr burt buru but- bute buti butt dbit dbtt dddd ddie ddre ddub debe debi debt debu dedd dede dedi dedu deeb deed deer deet deid deie deir deit der- derb dere deri derr dete detr deue deur deut dibb dibe dide didi didu dieb died dier diet dieu diii dird dire dirr dirt dite diti ditt dred dree drei dret drib drie drit drub drue drui drut druu dted dub- dubb dube dubu dudd dude dudu duer duet duid duir duit dure duri durt duru dute duur duut ebbr ebed eber ebid ebit ebru ebur edde eddi ede- edei eder edie edit edru edur eede eedu eeee eete eetu eid- eide eidi eidr eidu eied eiei eier eird eire eitb eiti eitr erbb erbe erde erdi ereb ered erei erer eret erie erit eriu erre ertu erub erur etbr etee eter etre ette etti ettu etui eubi eude euer eur- eure eurt i-be ibed ibet ibid ibie ibrd ibri ibtb idbe ided idee ider idid idie idir idre idub iedr ieet ieie iere ieri iett ieud iide iied iiie iiii iiit iitr iitt irbe ired iree irer iri- irid irie irre irri irte irti itbe iter itet itie itri itur iuiu rbbb rbbr rder rebb rebe rebu redd rede redi redr redu reeb reed reet reid reii reir reit reiu rerd rere reri rert reru retd rete reti retr rett reue reut reuu rib- ribe ribu ridd ride ridi ried rier riet rieu rire riri rite riti ritt ritu riue rred rrrr rtdt rtee rtei rubb rube rubi rubu rudd rude rudi rued ruer ruet ruid ruit rurd rure ruri ruru rute ruti rutt rutu ruud tbit tbrb tddb tdri tebu tedd tede tedi teed teer teet teie teir teiu ter- tere teri terr teru tete teti tetr tett tetu teut tibi tibu tidd tide tie- tied tiee tiei tier tiet tiit tiiu tirb tird tire tiri tirr tiru tite titi titt titu tre- tred tree trei tret treu tri- trib trie trit trte trtr trub trud true trut truu ttbb tter tttt tubb tube tubr tubu tude tudi tudu tuei tuer tuet tuit tuiu turb turd ture turi turr turt turu tute tuti tutt tutu u-ie ubbe ubbi uber ubet ubid ubii ubir ubit ubud uddi uder udet udid udir ueir uirr urbe urbi urde urdu ure- ured uret urib urie uriu urre urri urte urur urut uter utid utri utti uttu uuri uuuu

-tree b-e-d bbbee bd-re be-er bebed beber bebti bedde bedee beder bedet bedid bedri bedub bedue beebe beede beedi beerd beeri beete beeut beibi beide beidi beidu beier beird beire beite berbe berde berdu bered berei beret berid berie berit beriu berre berri berru berte berti betee beter betid betie betre bett- bette betti beuer beure beute bibbe biber bibie bibri bidde biddu bided bider bidet bidri bidur biebe bierd biere bieri biert bieti biide birde birdu birie birur bited biter bitit bitru bitte bitti biure brebu bredd brede bredi bredt breed breer breet breid breit brerd brere brett breu- bribe bride bridi brier brite britt brrrr brud- brude brued bruer bruet bruit bruiu bruri brute btr-d btr-t bubbe buber budde buddu budur buird buire burde burdi buret burie burri burru burte burtt burud burut buter butid butit butte butut ddddd debbi debed deber debet debie debir debit debte debut dedde dedee deder dedie dedir dedit dedur dedut deede deedi