-er b-u bbb bbd bbe bbf bbk bbo bbr bbu bdb bdd bde bdf bdk bdo bdr bdu be- beb bed bee bef bek beo ber beu bfb bfd bfe bff bfo bfr bfu bkb bke bkf bkk bko bkr bob bod boe bof bok boo bor bou brb brd bre brf brk bro brr bru bub bud bue buf buk buo bur buu dbb dbd dbe dbf dbk dbo dbr dbu ddb ddd dde ddf ddk ddo ddr ddu de- deb ded dee def dek deo der deu dfb dfd dfe dff dfk dfo dfr dfu dkb dke dkk dko dkr dku dob dod doe dof dok doo dor dou drb drd dre drk dro drr dru dub dud due duf duk duo dur ebb ebd ebe ebf ebk ebo ebr ebu ed- edb edd ede edf edk edo edr edu eeb eed eee eef eek eeo eer ef- efb efd efe eff efo efr ekb ekd eke ekf eko ekr eku eo- eob eod eoe eof eok eoo eor eou erb erd ere erf erk ero err eru eu- eub eud eue euf eur fbb fbd fbe fbf fbk fbo fbr fbu fdb fdd fde fdf fdk fdo fdr fdu feb fed fee fef fek feo fer feu ffd ffe fff ffk ffo ffr ffu fkb fkf fkk fob foe fof fok foo for fou frb frd fre frf frk fro frr fru fub fud fue fuf fuk fuo fur fuu kbb kbd kbe kbf kbk kbo kbr kbu kdb kde kdf kdk kdo kdr kdu ke- keb ked kee kef kek keo ker kfd kff kfo kfu kkb kke kkk kkr kku kob kod koe kof kok koo kor kou krd krf krk kro krr kru kub kud kue kuk kur kuu ob- obb obd obe obf obk obo obr obu odb odd ode odf odo odr odu oeb oed oee oef oeo oer of- ofb ofd ofe off ofo ofr ofu okb okd oke okk oko okr oku oo- oob ood oof ook ooo oor or- orb ord ore orf ork oro orr oru ou- oud oue ouf ouk ouo our rbb rbd rbe rbf rbk rbo rbr rbu rdb rdd rde rdf rdo rdr rdu re- reb red ree ref rek reo rer reu rfb rfd rfe rff rfk rfo rfr rfu rkb rke rkf rkk rko rku rob rod roe rof rok roo ror rou rrb rrd rrf rrk rrr rru rub rud rue ruf ruk ruo rur ruu ubb ube ubf ubk ubo ubr ubu udb udd ude udf udk udo udr udu ueb ued uee uef uer ufd ufe uff ufo ufr ufu ukb uke ukf ukk ukr uku uob uod uoe uok uoo uor ur- urb urd ure urf urk uro urr uru uue uur uuu

bbbb bbdd bbdo bbeb bd-r bduf bebb bebe bebo bede bedo bedu beeb beed beef beek beer befe beff befo beke beko beo- beod beof beok beor berd bere berk bero berr beru beuk beur bobb bobe bobo bobu bodb bode bodo bodu boee boef boeo boer bofd bofe boff bofu boke boko boku boob bood booe boof book boor bor- bord bore borf bork boro borr boru boud boue bouf bouk bour brdo breb bred bree bref brek breo brer brfu brkb brob brod broe brok broo bror brou brrr brud brue bubb bube bubo bubu budb budd bude budo budu buer bueu bufe buff bufo bufr buke bukk buko buku bur- burb burd bure burk buro burr buru d-bo dbfo dddd ddre ddub debe debu dedd dede dedo dedu deeb deed deef deek deer defe deff defo dek- deke deor der- derb dere derf derk dero derr deue deuk deur dfer dfoe dfrf dobb dobe dobu dod- dodd dode dodo doek doer doff doke doko doob dood doof dook door dord dore dorf dork doro dorr doru doub doud doue douf douk dour dred dree dref drek drob drod drof drou drub drue druk druu dub- dubb dube dubu dudd dude dudo dudu duer duff dufu duke duku duo- dure durk duro duru duur ebbo ebbr ebed eber eboe eboo ebor ebro ebru ebur edde eddo ede- eder edfu edod edou edru edur eede eedu eeee eefe eeke eero efbr efeo efke efor ekeb eked ekek eker ekur eode eore erbb erbe erde erdf ereb ered erer erke erob erod eroe eroo erre erro erub erur eude euer eur- eure euro f--k febo fede feeb feed feek feer fefe feff fefo feke feko feod feof ferb ferd fere ferk fero ferr feru feud ffee ffff ffrr fode foed foer fofo foke food foof fook for- forb ford fore fork foro forr foud four fred free freo frob froe frou frub frue fubb fubu fudd fude fuff fufu fuke fukk fuko fuku fuor fur- fure furo furr kbbb kbbd kbbe kbbf kbbk kbbo kbbr kbbu kbdb kbde kbdf kbdo kbdr kbeb kbed kbee kbef kbek kbeo kber kbfb kbff kbfk kbfo kbfr kbkb kbkf kbkk kbko kbkr kbob kbod kboe kbok kboo kbrb kbrd kbre kbrf kbrk kbro kbru kbub kbud kbue kbuf kbuk kbur kbuu kdbb kdbr kddb kddd kddf kddk kddr kdeb kdef kdfo kdfr kdkb kdkd kdkk kdko kdkr kdoe kdok kdrb kdrf kdro kdub kdur kebb kebe kebr kebu kedb kedd kede kedo kedr keed keef keek keer kefb keff kefr kekb keke keko keku keok ker- kerb kere kerf kerk kero kerr keru keur kfbk kfeb kfed kfer kffb kfff kffk kfkb kfok kfoo kfor kfrd kfre kfro kfrr kfru kfuo kkbb kkbd kkbe kkbo kkbr kkdd kkdo kked kkfr kkkk kkob kkoo kkor kkrb kkre kkrf kkrk kkro kkrr kkuu kobb kobe kobk kobo kobr kobu kode kodk kodo kodu koed kofe koff kofk kofo kofu kokb koke kokf kokk koko kokr koku koob kook kooo koor koou korb kord kore korf kork koro korr koru koub koue kour kouu krbb krbd krbe krbk krbr krdd krde krdo krdr krdu kreb kred kree kref krek kreo kreu krfd