b-u bbb bbc bbo bbr bbs bbt bbu bby bcb bcc bco bcr bcs bct bcu bcy bob boc boo bor bos bot bou boy brb bro brr brs brt bru bry bsb bsc bso bsr bss bst bsu bsy btb btc bto btr bts btt btu bty bub buc buo bur bus but buu buy by- byc byo byr bys byt byu c-- cbb cbc cbo cbr cbs cbt cbu cby ccb ccc cco ccr ccs cct ccu co- cob coc coo cor cos cot cou coy crb crc cro crr crs crt cru cry csb csc cso csr css cst csu csy ctb ctc cto ctr cts ctt ctu cty cub cuc cuo cur cus cut cuu cuy cyb cyc cyo cyr cys cyt ob- obb obc obo obr obs obt obu oby oc- ocb occ oco ocr ocs oct ocu oo- oob ooc ooo oor oos oot or- orb orc oro orr ors ort oru ory os- osb osc oso osr oss ost osu ot- otb otc oto otr ots ott otu ou- ouc ouo our ous out oyo oys rbb rbc rbo rbr rbs rbt rbu rcb rcc rco rcr rcs rct rcu rob roc roo ror ros rot rou roy rrb rrc rrr rrs rrt rru rsb rsc rso rsr rss rst rsu rtb rtc rto rtr rts rtt rtu rty rub ruc ruo rur rus rut ruu ruy ry- ryc ryo ryr rys ryu ryy sbb sbc sbo sbr sbs sbt sbu sby scb scc sco scr scs sct scu sob soc soo sor sos sot sou soy sr- srb src sro srr srs srt sry ss- ssb ssc sso ssr sss sst ssu stb stc sto str sts stt stu sty sub suc suo sur sus sut suu suy sy- syb syc syr sys syt syu tbb tbc tbo tbr tbs tbt tbu tcb tcc tco tcr tcs tct tcu to- tob toc too tor tos tot tou toy trb trc tro trr trs trt tru try tsb tsc tso tsr tss tst tsu tsy ttb ttc tto ttr tts ttt ttu tty tub tuc tuo tur tus tut tuu tuy tyc tyo tyr tys tyt ubb ubc ubo ubr ubs ubt ubu uby ucb ucc uco ucr ucs uct ucu uob uoc uoo uor uos uot ur- urb urc uro urr urs urt uru ury usb usc uso usr uss ust usu utb utc uto utr uts utt utu uty uuc uur uus uut uuu uyc uyo uys uyu ybc ybr ybs yby ycc yco ycs ycu ycy yob yoc yoo yor yos yot you yoy yrc yro yrs yrt yru ysb ysc yso ysr yss yst ysu ysy ytc yto ytr yts ytt ytu yuo yur yus yut yuu yuy yyb yyc yys yyt yyu yyy

-ous bbbb bbbs bboy bbrc bbyo bcbc bcbs bccc bccs bcor bcos bcrs bcru bcsc bcss bctc bcts bcuc bobb bobo bobs bobu boby boco bocs bocu boob booc boor boos boot bor- boro borr bors bort boru bory bosc boso boss bost bosu botb boto bots bott boty bour bous bout bouy boyo boys brcb brob broc broo bror bros brot brou brrr brrs brsb brsr brst brtc bruc brus brut bry- bryo bscs bsos bssc bsts btcc btcs btob btor btrc btrt btry btss bttb btus bubb bubo bubs bubu bucc buco bucs bucu buoy bur- burb buro burr burs burt buru bury busc buss bust busu busy but- buto buts butt buty buus buyo buys buyu byob byoc byos byrt bysb byso byss byst bysy byts c-bo cbbc cbbs cbcc cbcr cbcs cbct cbcu cbot cbrt cbry cbsc cbtc cbus cbyt ccbc cccb cccc cccs cccu ccob ccoc ccrc ccrs ccrt ccss ccst cctb cctc cctt ccuc ccus ccut cobb cobo cobs cobu coby coco coct cocu coob coos coot cor- corb corc coro corr cors cort cory cosc coso coss cost cosy cotb cotc coto cots cott cotu coty coub cour cous cout couy coyo coyr coys coyt crbc crbu crcc crcr crob croc croo cror crot croy crrt crss crst crtc crts crub crus crut cry- cryb cryo crys cscb cscc csco cscr cscs csob csor csos csot csrc csrs cssr cstc csto cstr csts csur csus csys ctbs ctor ctos ctot ctrc ctrs ctsc ctss ctsu ctts cub- cubb cubs cuby cucc curb curo curr curs curt cury cusb cuso cuss cust cusu cusy cut- cutc cuto cuts cutt cuy- cuyo cuyr cybb cybc cybo cyc- cycb cycc cycs cyrs cyrt cyst cyt- cytb cyto cyy- cyyc obbo obby obor obos obot oboy obro obsr obss obst obts obus ocbc occc occt ocos ocro ocrr ocrs oct- octo octs octy ocur ocys ooby oocr oooo ooos oort oory oost ootb oots ooty oous orbb orbo orbs orbu orby orco orcs oro- oror oros orot oroy orro orrs orry orso orsu orsy ortc orto orts orub orus orys osby oscc osco osoo osor osos osro ossb osso ossu ossy ostc ostr osts osyt otbs oto- otoo otor otos otoy otro otrs otry otso otsu otto otts ottu otur otus otyr oubs oucc our- ouro ours ourt oust out- outb outo outs outy ouu- ouyr oyou oyss oyst rbbb rbbr rbbs rbss rbst rcbc rcbo rccb rccc rccs rcos rcsc rcss rctc rcts rcyc rob- robb robo robs robt robu roby rocc roco rocs roob roor roos root rorc roro rort roru rory rosc roso ross rost rosy rotc roto rotr rots rott roty roub rous rout rouy roys royt rrrr rscc rscs rscy rsos rsts rstu rtcc rtss rtts rubb rubs rubu ruby ruct ruoy rurc ruro rurs ruru ruso russ rust rusu rusy ruto ruts rutt rutu ruty ruys ryob ryot rysy rytt ryyt s-os sbbs sbcc sbcs sbct sbor sbot sbst sbtc sbus sccc sccs scct sccy scob scoo scor scot scr- scrc scrs scry scsc scso scsr scst scsu sctc scto sctr scts scub scur scut sobo sobr sobs sobt sobu soco socr socs socy soor soos