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