-er b-u bbb bbd bbe bbf bbk bbn bbr bbu bdb bdd bde bdf bdk bdr bdu be- beb bed bee bef bek ben ber beu bfb bfd bfe bff bfn bfr bfu bkb bke bkf bkk bkn bkr bnb bnd bne bnf bnk bnn bnr bnu brb brd bre brf brk brn brr bru bub bud bue buf buk bun bur buu dbb dbd dbe dbf dbk dbn dbr dbu ddb ddd dde ddf ddk ddn ddr ddu de- deb ded dee def dek den der deu dfb dfd dfe dff dfk dfn dfr dfu dkb dke dkk dkr dku dnb dnd dne dnf dnk dnn dnr drb drd dre drk drn drr dru dub dud due duf duk dun dur ebb ebd ebe ebf ebk ebn ebr ebu ed- edb edd ede edf edk edn edr edu eeb eed eee eef eek een eer ef- efb efd efe eff efr ekb ekd eke ekf ekr eku en- enb end ene enf enk enn enr enu erb erd ere erf erk ern err eru eu- eub eud eue euf eun eur fbb fbd fbe fbf fbk fbn fbr fbu fdb fdd fde fdf fdk fdn fdr fdu feb fed fee fef fek fen fer feu ffd ffe fff ffk ffn ffr ffu fkb fkf fkk fnb fnd fne fnf fnk fnn fnr fnu frb frd fre frf frk frn frr fru fub fud fue fuf fuk fun fur fuu kbb kbd kbe kbf kbk kbn kbr kbu kdb kde kdf kdk kdr kdu ke- keb ked kee kef kek ken ker kfd kff kfu kkb kke kkk kkn kkr kku kn- knd kne knf knk knn knr knu krd krf krk krn krr kru kub kud kue kuk kun kur kuu nbb nbd nbe nbf nbk nbn nbr nbu ndb ndd nde ndf ndk ndn ndr ndu ne- neb ned nee nef nek nen ner neu nfb nfd nfe nff nfk nfn nfr nfu nke nkf nkk nkn nkr nku nnb nne nnf nnk nnn nnu nrb nrd nre nrf nrk nrn nrr nru nub nud nue nuk nun nur nuu rbb rbd rbe rbf rbk rbn rbr rbu rdb rdd rde rdf rdn rdr rdu re- reb red ree ref rek ren rer reu rfb rfd rfe rff rfk rfn rfr rfu rkb rke rkf rkk rku rnb rnd rnn rnr rnu rrb rrd rrf rrk rrn rrr rru rub rud rue ruf ruk run rur ruu ubb ube ubf ubk ubn ubr ubu udb udd ude udf udk udn udr udu ueb ued uee uef uen uer ufd ufe uff ufn ufr ufu ukb uke ukf ukk ukn ukr uku un- unb und une unf unk unn unr unu ur- urb urd ure urf urk urn urr uru uue uun uur uuu

-ene bbbb bbdd bbeb bbfn bd-r bduf bebb bebe bede bedu beeb beed beef beek been beer befe beff beke bend bene benk benn benu berd bere berk bern berr beru beuk beur bner bnrr breb bred bree bref brek bren brer brfu brkb brrr brud brue brun bubb bube bubu budb budd bude budu buen buer bueu bufe buff bufr buke bukk buku bunb bund bune bunk bunn bunu bur- burb burd bure burk burn burr buru dbrn dddd ddre ddub debe debu dedd dede dedu deeb deed deef deek deen deer defe deff defn dek- deke dene denk denn denu der- derb dere derf derk dern derr deue deuk deur dfer dfrf dner dnuk dred dree dref drek dren drub drue druk druu dub- dubb dube dubu dudd dude dudu duer duff dufu duke duku dune dunk dunn dure durk durn duru duur ebbr ebed eben eber ebru ebur edde ede- eden eder edfu edrn edru edun edur eede eedu eeee eefe eefn eeke eend efbr efen efke ekeb eked ekek eken eker ekne ekur enb- enbn enbr end- ende endu ened enee ener enfb enke enkr enne ennu enue enuf enur erbb erbe erde erdf ereb ered eren erer erke erne erre erub erur eude euer eur- eure f--k fede fedn feeb feed feek feen feer fefe feff feke fend fene fenk fenn ferb ferd fere ferk fern ferr feru feud ffee ffff ffrr ffun fndd fndn fndr fnuf fred free fren frub frue frun fubb fubu fudd fude fuff fufu fuke fukk fuku fund fune funf funk fur- fure furn furr kbbb kbbd kbbe kbbf kbbk kbbr kbbu kbdb kbde kbdf kbdn kbdr kbeb kbed kbee kbef kbek kben kber kbfb kbff kbfk kbfr kbkb kbkf kbkk kbkr kbnd kbnn kbnr kbnu kbrb kbrd kbre kbrf kbrk kbrn kbru kbub kbud kbue kbuf kbuk kbun kbur kbuu kdbb kdbn kdbr kddb kddd kddf kddk kddr kdeb kdef kden kdfn kdfr kdkb kdkd kdkk kdkn kdkr kdnd kdne kdnk kdnn kdnr kdrb kdrf kdub kdun kdur kebb kebe kebn kebr kebu kedb kedd kede kedr keed keef keek keen keer kefb keff kefr kekb keke keku ken- kend kene kenk kenn kenr kenu ker- kerb kere kerf kerk kern kerr keru keun keur kfbk kfbn kfdn kfeb kfed kfer kffb kfff kffk kffn kfkb kfnf kfnk kfnn kfrd kfre kfrn kfrr kfru kfun kkbb kkbd kkbe kkbn kkbr kkdd kked kken kkfn kkfr kkkk kknb kknd kkne kknn kknu kkrb kkre kkrf kkrk kkrn kkrr kkuu knbb knbe knbn knbr knbu kndb kndd knde kndf kndk kndn kndr kndu kneb kned knee knef knek knen kneu knfr knkk knnb knnd knnk knnr knrb knrk knub knud knue knuk knur krbb krbd krbe krbk krbr krdd krde krdr krdu kreb kred kree kref krek kren kreu krfd krfe krff krfn krkd krke krkk krkn krkr krku krnb krnd krne krnk krnn krnu krrb krre krrf krrk krrn krrr krue kruf kruk krun krur kubb kubd kube kubr kubu kudd kude kudu kued kuek kuen kueu kuff kufn kufr kuke kukk kukn kuku kund kune kunk kunr kunu kurb kurd kure kurk kurr kuru kuub kuuk kuur kuuu nber nbuf nddb ndde nder ndre