b-u bbb bbc bbg bbo bbr bbs bbu bcb bcc bcg bco bcr bcs bcu bgb bgc bgg bgo bgr bgs bgu bob boc bog boo bor bos bou brb brg bro brr brs bru bsb bsc bsg bso bsr bss bsu bub buc bug buo bur bus buu c-- cbb cbc cbg cbo cbr cbs cbu ccb ccc ccg cco ccr ccs ccu cgb cgc cgg cgo cgr cgs cgu co- cob coc cog coo cor cos cou crb crc crg cro crr crs cru csb csc csg cso csr css csu cub cuc cug cuo cur cus cuu gbc gbg gbo gbr gbs gbu gcb gcc gcg gco gcr gcs gcu ggb ggc ggg ggo ggr ggs ggu gob goc gog goo gor gos gou grb grc grg gro grr grs gru gsb gsc gsg gso gsr gss gsu gu- gub guc gug guo gur gus guu ob- obb obc obg obo obr obs obu oc- ocb occ ocg oco ocr ocs ocu ogc ogg ogo ogs oo- oob ooc oog ooo oor oos or- orb orc org oro orr ors oru os- osb osc osg oso osr oss osu ou- ouc ouo our ous rbb rbc rbg rbo rbr rbs rbu rcb rcc rcg rco rcr rcs rcu rgb rgc rgg rgo rgr rgs rob roc rog roo ror ros rou rrb rrc rrg rrr rrs rru rsb rsc rsg rso rsr rss rsu rub ruc rug ruo rur rus ruu sbb sbc sbg sbo sbr sbs sbu scb scc scg sco scr scs scu sgb sgc sgg sgo sgr sgs sgu sob soc sog soo sor sos sou sr- srb src srg sro srr srs ss- ssb ssc ssg sso ssr sss ssu sub suc sug suo sur sus suu ubb ubc ubg ubo ubr ubs ubu ucb ucc ucg uco ucr ucs ucu ugb ugc ugg ugo ugr ugs ugu uob uoc uog uoo uor uos ur- urb urc urg uro urr urs uru usb usc usg uso usr uss usu uuc uug uur uus uuu

-ous bbbb bbbs bbrc bbrg bcbc bcbg bcbs bccc bccs bcgs bcor bcos bcrs bcru bcsc bcss bcuc bggs bobb bobo bobs bobu boco bocs bocu bogg bogo bogs boob booc boog boor boos bor- borg boro borr bors boru bosc boso boss bosu bour bous brcb brob broc brog broo bror bros brou brrr brrs brsb brsr bruc brug brus bscs bsgs bsos bssc bubb bubo bubs bubu bucc buco bucs bucu bugg bugo bugs bur- burb burg buro burr burs buru busc buss busu buus c-bo cbbc cbbs cbcc cbcr cbcs cbcu cbgb cbsc cbus ccbc cccb cccc cccs cccu ccgc ccgs ccob ccoc ccrc ccrg ccrs ccsg ccss ccuc ccus cgcc cgcg cggs cgro cgsb cgss cobb cobo cobs cobu coco cocu cogo cogs coob coos cor- corb corc corg coro corr cors cosc coso coss coub cour cous crbc crbu crcc crcr crgs crob croc croo cror crss crub crug crus cscb cscc csco cscr cscs csob csor csos csrc csrs cssr csur csus cub- cubb cubs cucc curb curo curr curs cusb cusg cuso cuss cusu gbbo gbbs gc-c gcbc gccc gccs gcos gcrg gcss gcsu gggg ggss gobo gobs gocr gogo gogs goog goor goos gorb gorg goro gorr gors goso goss gosu gou- goug gour gous grbr grcc grob groc grog groo gror gros grou grrr grrs grss grub grug grur grus gsoc gsos gsur gubb gubs gubu gugb gugg gugu guos gurb gurg guro gurr gurs guru gusb guss guus obbo obor obos obro obsr obss obus ocbc occc ocos ocro ocrr ocrs ocur ogb ogog ogou ogro ogus oocr oooo ooos oous orbb orbo orbs orbu orco orcs orgo orgs oro- oror oros orro orrs orso orsu orub orus oscc osco osoo osor osos osro ossb osso ossu oubs oucc our- ouro ours ouu- rbbb rbbr rbbs rbss rcbc rcbo rccb rccc rccs rcgc rcos rcrg rcsc rcss rob- robb robo robs robu rocc roco rocs rogg rogo roob roog roor roos rorc roro roru rosc roso ross roub rous rrrr rscc rscs rsgb rsgc rsos rubb rubs rubu rugg rugs rurc ruro rurs ruru ruso russ rusu s-os sbbs sbcc sbcs sbor sbus sccc sccs scgs scob scog scoo scor scr- scrc scrs scsc scso scsr scsu scub scug scur sgcb sgcg sggg sggs sgro sgss sobo sobr sobs sobu soco socr socs sogo sogs soog soor soos sorb sorg soro sorr sors soru soso soss sour sous srbc srcc srgb sros srub ssbr sscc sscs ssgs ssoc ssrc ssrg ssrs sssb sssc ssss sub- subb subg subo subs suc- succ sucr sucs sug- sugg sugo suor suos sur- surc surg suro surr surs suru sus- suso suss susu suus ubbo uboc ubos ucbc ucos ucrc ucsb ucsc ucsu ugcc ugcg uggo uggs ugos ugro ugur uguu uocc uor- urbs urgu uro- uroo urso urss ursu urur urus usbc usbr usbs uscc uscg usco uscs usgo usoc usog usos ussb ussc ussr usss ussu usus uuoc uuuu

bbsrc bbuss bo-bo boboc bobos bobr bocor bocus boggs bogor bogos bogu bogur bogus boobs booco boors booru borbo borcs borgo borgs borgu boro- boroo boros borou borro borsu borus bosco boscs bosor bosso bourg bours brobo brobs brogs broos bross brous brrrr brugg bruss bscco bsous bucco bucsu bucur bugoo burbs burcu burgo burgs burgu buroo buros burro burrs burru buruc burus busog busso bussu busur busuu c-bus c-cor cbgbs ccccc co-bo co-co cobbs cobus cocc- cocco cocos cocur cocus coorg coors corbo corbu coro- corrs corso corss corsu corus cos-b cosco couco courb cours couru croco crocs croos cross crous cruor csobs cubo- cubub cuoco curbs curro currs curug cusco cusso go-go go-oo gobbo gobos gobus gocco gocoo gogos gogro goobo googs gorgo goscu gosub gours grgur grogg grogs groos gross grosu grrrr grubb grubs gruss gubbo gubos gubru gucus guroo guros gurro gursu gurur gurus o-r-b oboro occur ocr-b ocros og-os ogogo ogors ogugu oocss ooooo orbus orcos orcus