b-u bbb bbc bbk bbo bbr bbs bbt bbu bby bcb bcc bck bco bcr bcs bct bcu bcy bkb bkc bkk bko bkr bks bkt bob boc bok boo bor bos bot bou boy brb brk bro brr brs brt bru bry bsb bsc bsk bso bsr bss bst bsu bsy btb btc btk bto btr bts btt btu bty bub buc buk buo bur bus but buu buy by- byc byk byo byr bys byt byu c-- cbb cbc cbk cbo cbr cbs cbt cbu cby ccb ccc cck cco ccr ccs cct ccu ckb ckc cko cks ckt cky co- cob coc cok coo cor cos cot cou coy crb crc crk cro crr crs crt cru cry csb csc csk cso csr css cst csu csy ctb ctc ctk cto ctr cts ctt ctu cty cub cuc cuk cuo cur cus cut cuu cuy cyb cyc cyk cyo cyr cys cyt k-t kbb kbc kbk kbo kbr kbs kbu kcb kcc kck kcr kcs kct kcu kkb kkc kkk kkr kks kkt kku kky kob koc kok koo kor kos kot kou koy krc krk kro krr krs krt kru kry ksb ksc ksk kso ksr kss kst ksu ktb ktc ktk kto ktr kts ktt ktu kub kuc kuk kur kus kut kuu kuy kyc kyo kyr kys kyt kyu ob- obb obc obk obo obr obs obt obu oby oc- ocb occ ock oco ocr ocs oct ocu okb okc okk oko okr oks oku oo- oob ooc ook ooo oor oos oot or- orb orc ork oro orr ors ort oru ory os- osb osc osk oso osr oss ost osu ot- otb otc otk oto otr ots ott otu ou- ouc ouk ouo our ous out oyo oys rbb rbc rbk rbo rbr rbs rbt rbu rcb rcc rco rcr rcs rct rcu rkb rkc rkk rko rks rkt rku rky rob roc rok roo ror ros rot rou roy rrb rrc rrk rrr rrs rrt rru rsb rsc rsk rso rsr rss rst rsu rtb rtc rtk rto rtr rts rtt rtu rty rub ruc ruk ruo rur rus rut ruu ruy ry- ryc ryk ryo ryr rys ryu ryy sbb sbc sbk sbo sbr sbs sbt sbu sby scb scc sck sco scr scs sct scu sk- skb skc skk sko skr sks skt sku sky sob soc sok soo sor sos sot sou soy sr- srb src srk sro srr srs srt sry ss- ssb ssc ssk sso ssr sss sst ssu stb stc stk sto str sts stt stu sty sub suc suk suo sur sus sut suu suy sy- syb syc syk syr sys syt syu tbb tbc tbk tbo tbr tbs tbt tbu tcb tcc tck tco tcr tcs tct tcu tkb tkc tkk tko tkr tks tkt tky to- tob toc tok too tor tos tot tou toy trb trc trk tro trr trs trt tru try tsb tsc tsk tso tsr tss tst tsu tsy ttb ttc ttk tto ttr tts ttt ttu tty tub tuc tuk tuo tur tus tut tuu tuy tyc tyo tyr tys tyt ubb ubc ubk ubo ubr ubs ubt ubu uby ucb ucc uck uco ucr ucs uct ucu ukb ukc ukk ukr uku uob uoc uok uoo uor uos uot ur- urb urc urk uro urr urs urt uru ury usb usc usk uso usr uss ust usu utb utc utk uto utr uts utt utu uty uuc uur uus uut uuu uyc uyo uys uyu ybc ybr ybs yby ycc yco ycs ycu ycy ykk yob yoc yok yoo yor yos yot you yoy yrc yro yrs yrt yru ysb ysc ysk yso ysr yss yst ysu ysy ytc ytk yto ytr yts ytt ytu yuk 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 bkcy bkry bobb bobo bobs bobu boby bock boco bocs bocu boko boks boku boob booc book boor boos boot bor- bork boro borr bors bort boru bory bosc bosk boso boss bost bosu botb boto bots bott boty bouk bour bous bout bouy boyo boys brcb brkb brob broc brok broo bror bros brot brou brrr brrs brsb brsr brst brtc bruc brus brut bry- bryk bryo bscs bskt bsos bssc bsts btcc btcs btob btor btrc btrt btry btss bttb btus bubb bubo bubs bubu bucc buck buco bucs bucu bukk buko buku buky buoy bur- burb burk buro burr burs burt buru bury busc busk buss bust busu busy but- buto buts butt buty buus buyo buys buyu byck byob byoc byos byrk byrt bysb byso byss byst bysy byts c-bo cbbc cbbs cbcc cbcr cbcs cbct cbcu cbko cbkr 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 ckbc ckck ckco ckcs ckcy ckob ckoc ckoo ckor ckos ckot ckoy ckrc ckry cksb ckso ckst cktb ckts ckty cobb cobo cobs cobu coby cock coco coct cocu cok- coko coky coob cook coos coot cor- corb corc cork coro corr cors cort cory cosc coso coss cost cosy cotb cotc coto cots cott cotu coty coub couk cour cous cout couy coyo coyr coys coyt crbc crbu crcc crcr crkc crob croc crok croo cror crot croy crrt crss crst crtc crts crub cruk crus crut cry- cryb cryo crys cscb cscc csco cscr cscs csks 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 cuck cuk- curb curo curr curs curt cury cusb cusk cuso cuss cust cusu cusy cut- cutc cuto cuts cutt cuy- cuyo cuyr cybb cybc cybo cyc- cycb cycc cycs cyrk cyrs cyrt cyst cyt- cytb cyto cyy- cyyc k-os kbbb kbbc kbbk kbbo