-ol b-u bbb bbc bbl bbo bbr bbt bbu bcb bcc bcl bco bcr bct bcu blb blc bll blo blr blt blu bob boc bol boo bor bot bou brb brl bro brr brt bru btb btc btl bto btr btt btu bub buc bul buo bur but buu c-- cbb cbc cbl cbo cbr cbt cbu ccb ccc ccl cco ccr cct ccu cl- clb clc cll clo clr clt clu co- cob coc col coo cor cot cou crb crc crl cro crr crt cru ctb ctc ctl cto ctr ctt ctu cub cuc cul cuo cur cut cuu lbb lbc lbl lbo lbr lbt lbu lcb lcc lcl lco lcr lct lcu llb llc lll llo llr llt llu lob loc lol loo lor lot lou lrb lrc lro lrr lrt lru ltb ltc ltl lto ltr ltt ltu lub luc lul luo lur lut luu ob- obb obc obl obo obr obt obu oc- ocb occ ocl oco ocr oct ocu olb olc oll olo olt olu oo- oob ooc ool ooo oor oot or- orb orc orl oro orr ort oru ot- otb otc otl oto otr ott otu ou- ouc oul ouo our out rbb rbc rbl rbo rbr rbt rbu rcb rcc rcl rco rcr rct rcu rlc rll rlo rlr rlt rlu rob roc rol roo ror rot rou rrb rrc rrl rrr rrt rru rtb rtc rtl rto rtr rtt rtu rub ruc ruo rur rut ruu tbb tbc tbl tbo tbr tbt tbu tcb tcc tcl tco tcr tct tcu tlc tll tlo tlr tlt tlu to- tob toc tol too tor tot tou trb trc trl tro trr trt tru ttb ttc ttl tto ttr ttt ttu tub tuc tul tuo tur tut tuu ubb ubc ubl ubo ubr ubt ubu ucb ucc ucl uco ucr uct ucu ulb ulc ull ulo ulr ult ulu uob uoc uol uoo uor uot ur- urb urc url uro urr urt uru utb utc utl uto utr utt utu uuc uur uut uuu

bbbb bblb bbrc bcbc bccc bccl bcor bcru bctc bcuc blbt blcu blob bloc bloo blot blou blrc blub blur blut bobb bobo bobu boco bocu boll bolo bolt bolu boob booc bool boor boot bor- boro borr bort boru botb boto bott boul bour bout brcb brob broc brol broo bror brot brou brrr brtc bruc brut btcc btcl btob btor btrc btrt bttb bubb bubo bubu bucc buco bucu bulb bull bult bulu buol bur- burb burl buro burr burt buru but- buto butt c-bo cbbc cbcc cbcl cbcr cbct cbcu cblb cblc cbol cbot cbrl cbrt cbtc cbtl ccbc cccb cccc cccl cccu cclc ccob ccoc ccrc ccrl ccrt cctb cctc cctl cctt ccuc ccut clob cloo clor clot clou clro cltb cltc club clut cobb cobo cobu coco coct cocu col- colb coll colo colt colu coob cool coot cor- corb corc corl coro corr cort cotb cotc coto cott cotu coub coul cour cout crbc crbu crcc crcr crob croc crol croo cror crot crrt crtc crtl crub crut ctol ctor ctot ctrc ctrl cub- cubb cucc culb culc cull culo cult curb curl curo curr curt cut- cutc cuto cutt lbcc lblr lbrt lcbc lccc lcor lcrl lctl lcto llcc lllc llll lloc lloo lob- lobb lobo locc loco locu loll lolo loob looc lool loor loot loro lotl loto lotr lott loul lour lout louu lroc lrrc lrrr ltbl ltcc lttc lttr ltuc lull lulu lurt obbo oblu obol obor obot obro ocbc occc occt oclc ocrl ocro ocrr oct- octo ocul ocur olbo olcc ollo olor olot oltu olur oocr oolo oooo oort ootb orbb orbo orbu orco orlo orlu oro- oror orot orro ortc orto orub otcl oto- otoo otor otro otto ottu otur oucc oulu our- ouro ourt out- outb outo ouu- rbbb rbbr rbcl rcbc rcbo rccb rccc rctc rob- robb robo robt robu rocc roco roll rolo rolt roob rool roor root rorc roro rort roru rotc rotl roto rotr rott roub roul rout rrrr rtcc rtlt rubb rubu ruct rull rulo rurc ruro ruru rutl ruto rutt rutu tbcb tbcc tbrb tccc tccu tctc tcul tlco tobo tobt tobu toco tol- toll tolo tolt tolu tool toor toot torc toro torr tort toru totc toto totr tott toul tour tout trcc trcl troc troo trot trou trtc trtr trub truc trut truu ttbb tttt ttul tubb tubo tubr tubu tucc tuco tull tulo tulu tuor turb turc turo turr turt turu tutl tuto tutt tutu tuuo ubbo ublo uboc ucbc ucrc ucut ulbc ulcc ulco ullo ullr ulo- uloc ulto ultt ulul uocc uolc uor- uro- urol uroo urur urut utor utto uttu uulu uuoc uuuu

bloor blorb blort bloto blott blout blurb blurr blurt bluto bo-bo boboc bobr bocor boll- bollo bollu bolto booco boort booru borbo boro- boroo borot borou borro borul borut botou botro bottu boul- boulc boulo boult bouto brobo broll brolo brool broto brout brrrr brull btr-t bucco bucur bulb- bull- bulou bulto bulul bulut buolt burcu burol buroo burro burru burtt buruc burut buto- butor butot butou butuo butut c-cor ccccc ccrcl cctrl cloob cloor cloot clort clour clout clubb clurr clutt co-bo co-co cobol cobot cocc- cocco cocol cocto cocur coll- collo colo- color colur coolo corbo corbu corlu coro- corol corot corrl corto cott- cotto cottu cotul couco coull coult courb courl court couru couto coutu croco croll crool croot crott croul crout crull cruor ctrlc ctrol ctulu cubo- cubot cubub cullu culot culto culur cuoco curll curlo curlu curro curto cutco cutcu cutro cutto lobbo lobo- lobor loco- locro lollo lolol loobu lorut lotor lotru lotto louro ltcol lubur lucur luluc lulul lutol lutto o-r-b obolo oboro obout occur ocllo ocr-b octo- octol octor ocul- oculo ollur olotu olour ooooo orbot orobo oroco orolu orout ortoo oruro orutu otcbb otolo ototo otour ottur otulu oubut oullo ouoro ourol outro outto r-co- rcolo ro-ro robbo robo- robor