bbbb bbdd bbdo bbeb bbfc bbrc bcbc bccc bcde bcec bcer bcfc bcof bcor bd-r bdbc bddc bebb bebe bebo beck bede bedo beeb beed beef beek beer befe beff befo beke beko beo- beod beof beok beor berc berd bere berk bero berr bobb bobe bobo boce bock boco bodb bode bodo boec boee boef boeo boer bofd bofe boff boke boko boob booc bood booe boof book boor bor- bord bore borf bork boro borr brcb brce brdo breb brec bred bree bref brek breo brer brfc brkb brob broc brod broe brok broo bror brrr c-bo c-cd cbbc cbcc cbce cbcr cbdb cbdc cbdo cbec cbee cbef cber cbfb cbfc cbko cbkr cbrd cbre ccbc cccb cccc cccf ccdc ccdf ccdr cced ccee ccfc ccfd ccff ccob ccoc ccod ccrc ccre ccrf cd-e cd-r cdbf cddb cddr cdec cdef cder cdfe cdre cec- cece ceco cedd cede cedo ceeb ceec cef- cefc ceke ceor cer- cerc cerd cere cerf cero cfbc cfbr cfcb cfcf cfco cffb cffr cfor cfrb cfre ckbc ckbe ckck ckco ckdo cker ckfr ckob ckoc ckoo ckor ckrc ckrd cobb cobe cobo coce cock coco codd code coed cofc cofe coff cok- coke coko coob cood coof cook cor- corb corc cord core corf cork coro corr crbc crcc crce crcr crdc cre- creb crec cred cree creo crfc crkc crob croc crod croe crok croo cror d-bo dbcc dbfc dbfo dcbc dccb dccc dcdb dcfc dcrk dddd ddoc ddrc ddre debe dec- decc decd dece deck deco dedd dede dedo deeb deed deef deek deer defe deff defo dek- deke deor der- derb derc dere derf derk dero derr dfcc dfco dfer dfoe dfrf dkdc dobb dobe doce dock doco dod- dodd dode dodo doek doer doff doke doko doob dood doof dook door dorc dord dore dorf dork doro dorr drbc dred dree dref drek drfc drob drod drof ebbc ebbo ebbr ebcc ebed eber ebfc eboe eboo ebor ebro ecbc ecbe eccb eccc ecce ecco ecdc ecdf eced ecef ecfc ecfr ecko eco- ecod ecrc ecrf ecrr eddc edde eddo ede- eder edoc edod eede eeee eefe eeke eeoc eerc eero efbr efco efeo efke efor ekco ekeb eked ekek eker ekfc eocd eode eore erbb erbe ercc erce erde erdf ereb erec ered erer erfc erke erob eroc erod eroe eroo errc erre erro f--k fccf fdoc febo fece feck fede feeb feed feek feer fefc fefe feff fefo feke feko feod feof ferb ferc ferd fere ferk fero ferr ffcc ffee ffff ffrr foce fock foco fode foed foer fofo foke food foof fook for- forb ford fore fork foro forr frbc frcc fred free freo frfc frob froe kbbb kbbc kbbd kbbe kbbf kbbk kbbo kbbr kbcb kbce kbck kbco kbcr kbdb kbde kbdf kbdo kbdr kbeb kbec kbed kbee kbef kbek kbeo kber kbfb kbfc kbff kbfk kbfo kbfr kbkb kbkf kbkk kbko kbkr kbob kboc kbod kboe kbok kboo kbrb kbrc kbrd kbre kbrf kbrk kbro kcbc kcbd kcbf kcbk kcbr kccb kccc kccd kcck kccr kcdc kcdd kcdr kceb kcec kced kcee kceo kcfb kcfc kcfd kcfo kckc kckf kckk kcko kckr kcob kcoe kcof kcor kcrc kcro kcrr kdbb kdbr kdcc kdcd kdce kdco kdcr kddb kddc kddd kddf kddk kddr kdeb kdec kdef kdfc kdfo kdfr kdkb kdkd kdkk kdko kdkr kdoc kdoe kdok kdrb kdrf kdro kebb kebc kebe kebr keck keco kecr kedb kedc kedd kede kedo kedr keed keef keek keer kefb kefc keff kefr kekb kekc keke keko keok ker- kerb kerc kere kerf kerk kero kerr kfbc kfbk kfcd kfcf kfco kfcr kfeb kfed kfer kffb kfff kffk kfkb kfok kfoo kfor kfrc kfrd kfre kfro kfrr kkbb kkbd kkbe kkbo kkbr kkcb kkcd kkck kkco kkcr kkdc kkdd kkdo kked kkfr kkkk kkob kkoo kkor kkrb kkrc kkre kkrf kkrk kkro kkrr kobb kobc kobe kobk kobo kobr kocb kocd kocf kock kode kodk kodo koed kofc kofe koff kofk kofo kokb kokc koke kokf kokk koko kokr koob kooc kook kooo koor korb korc kord kore korf kork koro korr krbb krbd krbe krbk krbr krcb krcc krcd krce krco krdc krdd krde krdo krdr kreb krec kred kree kref krek kreo krfc krfd krfe krff krfo krkc krkd krke krkk krko krkr krob kroc krod kroe krof krok kroo kror krrb krrc krre krrf krrk krro krrr o-eo obbo obec obed ober obkb oboe obok obor obre obro ocbc occc oce oced ocee ocef ocke ocre ocro ocrr odbo oddd oded odeo oder odoo odor oec- oecc oedo oeec oere ofcr ofdr ofek ofer off- offc offe offo offr ofor ofre oked oker okko okok okor okre okro oobe oocr ooer ooff oooo oord oore orbb orbe orbo orce orco orde ordo ore- oreb orec ored orek oreo orer orfe orff orke orko oro- oroe orof orok oror orro rbbb rbbr rcbc rcbo rccb rccc rcdc rcde rcfc rcrd rder rdoc rebb rebe rebk rebo recc recd rece reck recr redc redd rede redo redr reeb reed reef reek refd refe reff refr reke reko reod reof rerd rere rero rfef rffc rkkf rob- robb robe robo rocc roce rock roco rodd rode rodo roed roer rofc rofe roff rofo roke rokk roko rokr roob rood roof rook roor rorc rore rork roro rred rrfc rrrr