b-u bbb bbc bbd bbn bbo bbr bbu bcb bcc bcd bcn bco bcr bcu bdb bdc bdd bdo bdr bdu bnb bnc bnd bnn bno bnr bnu bob boc bod bon boo bor bou brb brd brn bro brr bru bub buc bud bun buo bur buu c-- cbb cbc cbd cbn cbo cbr cbu ccb ccc ccd ccn cco ccr ccu cdb cdc cdd cdn cdo cdr cdu cn- cnb cnc cnd cnn cno cnr cnu co- cob coc cod con coo cor cou crb crc crd crn cro crr cru cub cuc cud cun cuo cur cuu dbb dbc dbd dbn dbo dbr dbu dcb dcc dcd dcn dco dcr dcu ddb ddc ddd ddn ddo ddr ddu dnb dnc dnd dnn dno dnr dob doc dod don doo dor dou drb drc drd drn dro drr dru dub duc dud dun duo dur nbb nbc nbd nbn nbo nbr nbu ncb ncc ncd ncn nco ncr ncu ndb ndc ndd ndn ndo ndr ndu nnb nnc nnn nno nnu no- nob noc nod non noo nor nou nrb nrc nrd nrn nro nrr nru nub nuc nud nun nuo nur nuu ob- obb obc obd obn obo obr obu oc- ocb occ ocd ocn oco ocr ocu odb odc odd odn odo odr odu on- onb onc ond onn ono onr onu oo- oob ooc ood oon ooo oor or- orb orc ord orn oro orr oru ou- ouc oud oun ouo our rbb rbc rbd rbn rbo rbr rbu rcb rcc rcd rcn rco rcr rcu rdb rdc rdd rdn rdo rdr rdu rnb rnc rnd rnn rno rnr rnu rob roc rod ron roo ror rou rrb rrc rrd rrn rrr rru rub ruc rud run ruo rur ruu ubb ubc ubn ubo ubr ubu ucb ucc ucd ucn uco ucr ucu udb udc udd udn udo udr udu un- unb unc und unn uno unr unu uob uoc uod uon uoo uor ur- urb urc urd urn uro urr uru uuc uun uur uuu

bbbb bbdd bbdo bbrc bcbc bccc bcnu bcor bcru bcuc bd-r bdbc bddc bnoc bnor bnrr bobb bobo bobu boco bocu bodb bodo bodu bonc bond bonn bono bonu boob booc bood boon boor bor- bord born boro borr boru boud boun bour brcb brdo brno brob broc brod bron broo bror brou brrr bruc brud brun bubb bubo bubu bucc buco bucu budb budd budo budu bunb bund bunn buno bunu buon bur- burb burd burn buro burr buru c-bo c-cd cbbc cbcc cbcn cbcr cbcu cbdb cbdc cbdn cbdo cbnd cbrd cbrn ccbc ccbn cccb cccc cccu ccdc ccdn ccdr ccnb ccnc ccnr ccnu ccob ccoc ccod ccrc ccuc cd-r cddb cddr cdnb cdnc cdon cnbc cnco cndd cnrc cnrr cobb cobo cobu coco cocu codd con- conc cond conn cono coob cood coon cor- corb corc cord corn coro corr coub coud coun cour crbc crbu crcc crcr crdc crob croc crod cron croo cror crub crud crun cub- cubb cucc cucn cund cuno cuon curb curd curn curo curr d-bo dbcc dbrn dcbc dccb dccc dccu dcdb dcon dddd ddoc ddrc ddub dnoc dnrc dobb dobu doco docu dod- dodd dodo donc dond donn dono donr doob dood doon door dorc dord dorn doro dorr doru doub douc doud doun dour drbc drno drob drod dron drou drub druu dub- dubb dubc dubu duco dudd dudo dudu dunc dunn duno duo- duon durn duro duru duur nbbc nbbo nbcc nbco ncbc nccc nccn nccr nccu ncdc ncdn ncdr ncdu ncnc ncnd ncoc ncor ncrc ndcc nddb nddo ndoc ndor ndrc nndb nnnn nobc nobo nobu noco nodo nodu non- nonn nono nonu noo- noob noon nooo noor nor- norb norc nord norn noro norr noun nour nrdc nroc nron nrrc nrrd nubc nucu nudc nudd nudo nunc nunn nuno nuoc nuon nurc nurd nurn nurr nuru obbo obon obor obro ocbc occc occn ocon ocro ocrr ocur odbo oddd odnb odon odoo odor odou odur onc- oncd onco ondo onno onod onon onor onur oocr oooo oord orbb orbo orbu orco ordn ordo ordu ornc orno oro- oron oror orro orub oucc oudc oun- ound our- ourn ouro ouu- rbbb rbbr rcbc rcbo rccb rccc rcdc rcnr rcon rcrd rdoc rnbr rnco rndc rnod rob- robb robo robu rocc roco rodd rodo ronc rond rono roob rood roon roor rorc roro roru roub roud roun rrrr rrun rubb rubu rudd rudo runc rund runn runo rurc rurd ruro ruru ruud ruun ubbo uboc ubod ubon ubud ucbc ucdc ucdd ucon ucrc udbc udon udoo udun unbd uncc unco undo unno unon unro uocc uor- urdu uro- uroo urun urur uuno uuoc uuuu

bdoor bo-bo boboc bobr bocon bocor bodd- bodoc bodor bondo bonon bonou bonud booco boond boord boorn booru borbo bordo born- borno bornu boro- borod boron boroo borou borro borun boudu bound bourd bourn brobo brodd brodo bronc brond bronn brood broon broud broun brrrr brud- brunn bruno bruun bubon bucco bucur buddu budoc budur bunco bundu bunud bunun buono buord burcu burn- buron buroo burro burru buruc burud burun c-cor ccccc cnnnn co-bo co-co cocc- cocco cocon cocur codco codo codon codru conco concr condo condr connu cono- conob conon conor coord corbo corbu corno cornu coro- corod coron corun couco cound courb courd couru croco crodo crood croon croud croun crudo cruor cubo- cubub cunco cuoco curno curro d-con d-cru d-rod dconn ddddd do-do dobro dodon dodoo dodro dondo donon donor doodo doorn dorno doron dorud douro drbob drobo drood droon droun dubbo dubno dubon dubuc ducor ducun duddo dudon dudou duduc dundo dunno dunod dunun durno duroc duron ndour nduru nnooo no-do no-no nobob nobuo non-u nondo nonno noonu noord norbu norcd norco nordo noroc noron norro norun nu-nu nucor nudur nunon nunun nuodb nuoro nurun o-bon o-r-b obodo oboro obudu occur ocorn ocr-b oddur odour odudu oduro oncdr onco- onnbc onond onoon onorn onour ooooo orcon ordoc ordon ordro