b-u bbb bbc bbk bbn bbo bbr bbt bbu bcb bcc bck bcn bco bcr bct bcu bkb bkc bkk bkn bko bkr bkt bnb bnc bnk bnn bno bnr bnt bnu bob boc bok bon boo bor bot bou brb brk brn bro brr brt bru btb btc btk btn bto btr btt btu bub buc buk bun buo bur but buu c-- cbb cbc cbk cbn cbo cbr cbt cbu ccb ccc cck ccn cco ccr cct ccu ckb ckc cko ckt cn- cnb cnc cnn cno cnr cnt cnu co- cob coc cok con coo cor cot cou crb crc crk crn cro crr crt cru ctb ctc ctk ctn cto ctr ctt ctu cub cuc cuk cun cuo cur cut cuu k-t kbb kbc kbk kbn kbo kbr kbu kcb kcc kck kcn kcr kct kcu kkb kkc kkk kkn kkr kkt kku kn- knc knk knn kno knr knt knu kob koc kok kon koo kor kot kou krc krk krn kro krr krt kru ktb ktc ktk ktn kto ktr ktt ktu kub kuc kuk kun kur kut kuu nbb nbc nbk nbn nbo nbr nbt nbu ncb ncc nck ncn nco ncr nct ncu nkc nkk nkn nko nkr nkt nku nnb nnc nnk nnn nno nnt nnu no- nob noc nok non noo nor not nou nrb nrc nrk nrn nro nrr nrt nru ntb ntc ntk ntn nto ntr ntt ntu nub nuc nuk nun nuo nur nut nuu ob- obb obc obk obn obo obr obt obu oc- ocb occ ock ocn oco ocr oct ocu okb okc okk oko okr oku on- onb onc onk onn ono onr ont onu oo- oob ooc ook oon ooo oor oot or- orb orc ork orn oro orr ort oru ot- otb otc otk otn oto otr ott otu ou- ouc ouk oun ouo our out rbb rbc rbk rbn rbo rbr rbt rbu rcb rcc rcn rco rcr rct rcu rkb rkc rkk rko rkt rku rnb rnc rnn rno rnr rnt rnu rob roc rok ron roo ror rot rou rrb rrc rrk rrn rrr rrt rru rtb rtc rtk rtn rto rtr rtt rtu rub ruc ruk run ruo rur rut ruu tbb tbc tbk tbn tbo tbr tbt tbu tcb tcc tck tcn tco tcr tct tcu tkb tkc tkk tko tkr tkt tnb tnc tnk tnn tno tnr tnt to- tob toc tok ton too tor tot tou trb trc trk trn tro trr trt tru ttb ttc ttk ttn tto ttr ttt ttu tub tuc tuk tun tuo tur tut tuu ubb ubc ubk ubn ubo ubr ubt ubu ucb ucc uck ucn uco ucr uct ucu ukb ukc ukk ukn ukr uku un- unb unc unk unn uno unr unt unu uob uoc uok uon uoo uor uot ur- urb urc urk urn uro urr urt uru utb utc utk utn uto utr utt utu uuc uun uur uut uuu

bbbb bbrc bcbc bccc bcnu bcor bcru bctc bcuc bnoc bnor bnrr bobb bobo bobu bock boco bocu bokn boko boku bonc bonk bonn bono bont bonu boob booc book boon boor boot bor- bork born boro borr bort boru botb botn boto bott bouk boun bour bout brcb brkb brno brob broc brok bron broo bror brot brou brrr brtc bruc brun brut btcc btob btor btrc btrt bttb bubb bubo bubu bucc buck buco bucu bukk buko buku bunb bunk bunn buno bunt bunu buon bur- burb burk burn buro burr burt buru but- buto butt c-bo cbbc cbcc cbcn cbcr cbct cbcu cbkn cbko cbkr cbot cbrn cbrt cbtc ccbc ccbn cccb cccc cccu ccnb ccnc ccnr ccnu ccob ccoc ccrc ccrt cctb cctc cctt ccuc ccut ckbc ckck ckco cknb cknc cknt ckob ckoc ckoo ckor ckot ckrc cktb cnbc cnco cnrc cnrr cnrt cntc cntk cntr cnut cobb cobo cobu cock coco coct cocu cok- coko con- conc conk conn cono cont coob cook coon coot cor- corb corc cork corn coro corr cort cotb cotc cotn coto cott cotu coub couk coun cour cout crbc crbu crcc crcr crkc crob croc crok cron croo cror crot crrt crtc crub cruk crun crut ctor ctot ctrc ctrn cttn cub- cubb cucc cuck cucn cuk- cuno cunt cuon curb curn curo curr curt cut- cutc cuto cutt kbbb kbbc kbbk kbbo kbbr kbbt kbbu kbcb kbck kbco kbcr kbct kbcu kbkb kbkk kbko kbkr kbnn kbno kbnr kbnu kbob kboc kbok kbon kboo kbot kbrb kbrc kbrk kbrn kbro kbrt kbru kbtb kbtc kbtk kbtn kbto kbtr kbtt kbub kbuc kbuk kbun kbur kbut kbuu kcbc kcbk kcbr kcbu kccb kccc kcck kccr kcct kccu kckc kckk kckn kcko kckr kcnb kcno kcnr kcnt kcob kcon kcor kcot kcou kcrc kcrn kcro kcrr kcrt kcru kctb kctc kctn kcto kctu kcub kcuk kkbb kkbn kkbo kkbr kkbt kkcb kkck kkcn kkco kkcr kkct kkkk kknb kknn kkno kknt kknu kkob kkon kkoo kkor kkot kkrb kkrc kkrk kkrn kkro kkrr kkrt kktc kktk kktu kkut kkuu knbb knbc knbn knbr knbt knbu kncb knck kncn knco kncr knct kncu knkk knkt knnb knnk knnr knob knoc knok knon knor knot knou knrb knrk knro kntk kntn knto kntr kntu knub knuk knur knut kobb kobc kobk kobn kobo kobr kobu kocb kock kocn koct kokb kokc kokk kokn koko kokr koku konc konk kono kont koob kooc kook koon kooo koor koot koou korb korc kork korn koro korr kort koru kotb kotc kotk kotn koto kotr kott kotu koub kour kout kouu krbb krbk krbr krbt krcb krcc krcn krco krcu krkc krkk krkn krko krkr krku krnb krnk krnn krno krnt krnu krob kroc krok kroo kror krrb krrc krrk krrn krro krrr krrt krtc krtk krtn krto krtr kruc kruk krun krur ktbb ktbc ktbn ktbr ktbt ktbu ktcc ktck ktco ktcr ktkb ktkc ktkk ktkn ktko ktkr ktkt ktku ktnc ktnk ktnn ktno ktnt ktob ktoc ktok