-er b-u bbb bbd bbe bbk bbn bbr bbt bbu bdb bdd bde bdk bdr bdt bdu be- beb bed bee bek ben ber bet beu bkb bke bkk bkn bkr bkt bnb bnd bne bnk bnn bnr bnt bnu brb brd bre brk brn brr brt bru btb btd bte btk btn btr btt btu bub bud bue buk bun bur but buu dbb dbd dbe dbk dbn dbr dbt dbu ddb ddd dde ddk ddn ddr ddt ddu de- deb ded dee dek den der det deu dkb dke dkk dkr dkt dku dnb dnd dne dnk dnn dnr dnt drb drd dre drk drn drr drt dru dtb dtd dte dtk dtn dtr dtt dtu dub dud due duk dun dur dut ebb ebd ebe ebk ebn ebr ebt ebu ed- edb edd ede edk edn edr edt edu eeb eed eee eek een eer eet ekb ekd eke ekr ekt eku en- enb end ene enk enn enr ent enu erb erd ere erk ern err ert eru etb etd ete etk etn etr ett etu eu- eub eud eue eun eur eut k-t kbb kbd kbe kbk kbn kbr kbu kdb kde kdk kdr kdt kdu ke- keb ked kee kek ken ker ket kkb kke kkk kkn kkr kkt kku kn- knd kne knk knn knr knt knu krd krk krn krr krt kru ktb kte ktk ktn ktr ktt ktu kub kud kue kuk kun kur kut kuu nbb nbd nbe nbk nbn nbr nbt nbu ndb ndd nde ndk ndn ndr ndt ndu ne- neb ned nee nek nen ner net neu nke nkk nkn nkr nkt nku nnb nne nnk nnn nnt nnu nrb nrd nre nrk nrn nrr nrt nru ntb ntd nte ntk ntn ntr ntt ntu nub nud nue nuk nun nur nut nuu rbb rbd rbe rbk rbn rbr rbt rbu rdb rdd rde rdn rdr rdt rdu re- reb red ree rek ren rer ret reu rkb rke rkk rkt rku rnb rnd rnn rnr rnt rnu rrb rrd rrk rrn rrr rrt rru rtb rtd rte rtk rtn rtr rtt rtu rub rud rue ruk run rur rut ruu tbb tbd tbe tbk tbn tbr tbt tbu tdb tdd tde tdk tdn tdr tdt tdu te- teb ted tee tek ten ter tet teu tkb tke tkk tkr tkt tnb tnd tne tnk tnn tnr tnt trb trd tre trk trn trr trt tru ttb ttd tte ttk ttn ttr ttt ttu tub tud tue tuk tun tur tut tuu ubb ube ubk ubn ubr ubt ubu udb udd ude udk udn udr udt udu ueb ued uee uen uer uet ukb uke ukk ukn ukr uku un- unb und une unk unn unr unt unu ur- urb urd ure urk urn urr urt uru utb utd ute utk utn utr utt utu uue uun uur uut uuu

-ene bbbb bbdd bbeb bbet bd-r bebb bebe bede bedu beeb beed beek been beer beet beke bend bene benk benn bent benu berd bere berk bern berr bert beru bete bett betu beuk beur bner bnet bnrr brdt breb bred bree brek bren brer bret brkb brrr brud brue brun brut btdt btek bten btrt bttb bubb bube bubu budb budd bude budu buen buer bueu buke bukk buku bunb bund bune bunk bunn bunt bunu bur- burb burd bure burk burn burr burt buru but- bute butt dbrn dbtt dddd ddre ddub debe debt debu dedd dede dedu deeb deed deek deen deer deet dek- deke dene denk denn dent denu der- derb dere derk dern derr dete detk detn detr deue deuk deur deut dner dnet dntt dnuk dnut dred dree drek dren dret drub drue druk drut druu dted dtek dten dtnb dub- dubb dube dubu dudd dude dudu duer duet duke dukt duku dune dunk dunn dunt dure durk durn durt duru dute duur duut ebbr ebed eben eber ebru ebur edde ede- eden eder edrn edru edun edur eede eedu eeee eeke eend eent eete eetu ekeb eked ekek eken eker eket ekne ekur enb- enbn enbr end- ende endu ened enee ener enke enkr enne ennu ent- entd ente entr enue enur enut erbb erbe erde ereb ered eren erer eret erke erne erre ertu erub erur etbr etee eten eter etne etnr etre ette ettn ettu etun eude euer eur- eure eurt kbbb kbbd kbbe kbbk kbbr kbbt kbbu kbdb kbde kbdn kbdr kbeb kbed kbee kbek kben kber kbet kbkb kbkk kbkr kbnd kbnn kbnr kbnu kbrb kbrd kbre kbrk kbrn kbrt kbru kbtb kbte kbtk kbtn kbtr kbtt kbub kbud kbue kbuk kbun kbur kbut kbuu kdbb kdbn kdbr kddb kddd kddk kddr kdeb kden kdet kdkb kdkd kdkk kdkn kdkr kdkt kdnd kdne kdnk kdnn kdnr kdrb kdtd kdtn kdtr kdub kdun kdur kdut kebb kebe kebn kebr kebt kebu kedb kedd kede kedr kedt keed keek keen keer keet kekb keke keku ken- kend kene kenk kenn kenr kent kenu ker- kerb kere kerk kern kerr kert keru ket- ketd kete ketk ketr kett ketu keun keur kkbb kkbd kkbe kkbn kkbr kkbt kkdd kkdt kked kken kkkk kknb kknd kkne kknn kknt kknu kkrb kkre kkrk kkrn kkrr kkrt kktk kktu kkut kkuu knbb knbe knbn knbr knbt knbu kndb kndd knde kndk kndn kndr kndu kneb kned knee knek knen knet kneu knkk knkt knnb knnd knnk knnr knrb knrk knte kntk kntn kntr kntu knub knud knue knuk knur knut krbb krbd krbe krbk krbr krbt krdd krde krdr krdu kreb kred kree krek kren kret kreu krkd krke krkk krkn krkr krku krnb krnd krne krnk krnn krnt krnu krrb krre krrk krrn krrr krrt krtk krtn krtr krue kruk krun krur ktbb ktbn ktbr ktbt ktbu ktdb ktdd ktde ktdk ktdr kted ktee ktek kten ktkb ktke ktkk ktkn ktkr ktkt ktku ktnd ktne ktnk ktnn ktnt ktrb ktre ktrk ktrn ktrr ktrt ktru kttk kttn kttr kttt kttu ktub