bbbb bbpr bbrc bcbc bcbp bccc bcor bcpp bctc bkpr bkpt bobb bobo bock boco boko boob booc book boop boor boot bopp bor- bork boro borr bort botb boto bott bpcp bpot bprc brcb brkb brob broc brok broo bror brot brrr brtc btbp btcc btob btor btrc btrt bttb c-bo cbbc cbcc cbcp cbcr cbct cbko cbkr cbot cbpc cbpp cbrt cbtc ccbc cccb cccc cccp ccob ccoc ccpp ccpr ccrc ccrp ccrt cctb cctc cctt ckbc ckck ckco ckob ckoc ckoo ckor ckot ckpc ckpr ckrc cktb cobb cobo cock coco cocp coct cok- coko coob cook coop coot copo copp copr copt cor- corb corc cork coro corp corr cort cotb cotc coto cott cpbc cprt cptp cptr crbc crcc crcr crkc crkp crob croc crok croo crop cror crot crpc crrt crtc crtp ctcp ctor ctot ctpo ctpp ctrc ctrp kbbb kbbc kbbk kbbo kbbr kbbt kbcb kbck kbco kbcr kbct kbkb kbkk kbko kbkr kbob kboc kbok kboo kbot kbpc kbpk kbpo kbpr kbpt kbrb kbrc kbrk kbro kbrt kbtb kbtc kbtk kbto kbtr kbtt kcbc kcbk kcbr kccb kccc kcck kccr kcct kckc kckk kcko kckr kcob kcor kcot kcpc kcpo kcpr kcpt kcrc kcro kcrp kcrr kcrt kctb kctc kcto kkbb kkbo kkbr kkbt kkcb kkck kkco kkcr kkct kkkk kkob kkoo kkor kkot kkpc kkpk kkpt kkrb kkrc kkrk kkro kkrr kkrt kktc kktk kobb kobc kobk kobo kobr kocb kock kocp koct kokb kokc kokk koko kokp kokr koob kooc kook kooo koop koor koot kopb kopp kopr kopt korb korc kork koro korr kort kotb kotc kotk koto kotr kott kpbb kpbr kpcc kpcr kpkk kpkr kpob kpoc kpok kpoo kpop kppc kppk kppo kppp kppr kprb kprc kprk kpro kprp kprr kprt kpto kptr kptt krbb krbk krbr krbt krcb krcc krco krkc krkk krko krkr krob kroc krok kroo krop kror krpr krpt krrb krrc krrk krro krrr krrt krtc krtk krto krtr ktbb ktbc ktbr ktbt ktcc ktck ktco ktcr ktkb ktkc ktkk ktko ktkr ktkt ktob ktoc ktok ktoo ktop ktor ktot ktpk ktpo ktpr ktpt ktrb ktrc ktrk ktro ktrp ktrr ktrt kttc kttk ktto kttp kttr kttt obbo obkb obok obor obot obro ocbc occc occt ocpp ocro ocrr oct- octo okko okok okor okot okpo okro okto oocr oooo oort ootb ootp opo- opor oppo opto orbb orbo orco orko oro- orok oror orot orpc orro ortc orto oto- otok otoo otor otpp otro otto pbcc pboc pbpk pcbc pccc pcpb pcpp pcrc pobo pock poco poko pook poop poor poot pop- popc popo popp popt porb porc pork poro porr port potc poto pott ppcc pppo pppp pprc pptt prbc prcc prcp pro- prob proc proo prop prot prtc prtp prtr ptcc ptop pttc pttk rbbb rbbr rcbc rcbo rccb rccc rcpo rcpt rctc rob- robb robo robt rocc rock roco rokk roko rokr roob rook roop roor root ropo rorc rork roro rort rotc rotk roto rotr rott rpob rrrr rtcc rttp tbcb tbcc tbrb tbtp tccc tcpo tctc tobo tobt tock toco toko took toor toot top- topo topp topt torc tork toro torp torr tort totc toto totr tott tpck tpcp tppp tppr tptp tptr trcc troc troo trop trot trpc trpp trtc trtr ttbb ttcp ttop tttt