b-u bbb bbc bbg bbn bbo bbr bbt bbu bcb bcc bcg bcn bco bcr bct bcu bgb bgc bgg bgn bgo bgr bgt bgu bnb bnc bng bnn bno bnr bnt bnu bob boc bog bon boo bor bot bou brb brg brn bro brr brt bru btb btc btg btn bto btr btt btu bub buc bug bun buo bur but buu c-- cbb cbc cbg cbn cbo cbr cbt cbu ccb ccc ccg ccn cco ccr cct ccu cgb cgc cgg cgn cgo cgr cgt cgu cn- cnb cnc cng cnn cno cnr cnt cnu co- cob coc cog con coo cor cot cou crb crc crg crn cro crr crt cru ctb ctc ctg ctn cto ctr ctt ctu cub cuc cug cun cuo cur cut cuu gbc gbg gbn gbo gbr gbt gbu gcb gcc gcg gcn gco gcr gct gcu ggb ggc ggg ggn ggo ggr ggt ggu gnb gnc gnn gno gnr gnt gnu gob goc gog gon goo gor got gou grb grc grg grn gro grr grt gru gtb gtc gtg gtn gto gtr gtt gtu gu- gub guc gug gun guo gur gut guu nbb nbc nbg nbn nbo nbr nbt nbu ncb ncc ncg ncn nco ncr nct ncu ngb ngc ngg ngn ngo ngt ngu nnb nnc nng nnn nno nnt nnu no- nob noc nog non noo nor not nou nrb nrc nrg nrn nro nrr nrt nru ntb ntc ntg ntn nto ntr ntt ntu nub nuc nug nun nuo nur nut nuu ob- obb obc obg obn obo obr obt obu oc- ocb occ ocg ocn oco ocr oct ocu ogc ogg ogn ogo ogt on- onb onc ong onn ono onr ont onu oo- oob ooc oog oon ooo oor oot or- orb orc org orn oro orr ort oru ot- otb otc otg otn oto otr ott otu ou- ouc oun ouo our out rbb rbc rbg rbn rbo rbr rbt rbu rcb rcc rcg rcn rco rcr rct rcu rgb rgc rgg rgn rgo rgr rgt rnb rnc rng rnn rno rnr rnt rnu rob roc rog ron roo ror rot rou rrb rrc rrg rrn rrr rrt rru rtb rtc rtg rtn rto rtr rtt rtu rub ruc rug run ruo rur rut ruu tbb tbc tbg tbn tbo tbr tbt tbu tcb tcc tcg tcn tco tcr tct tcu tgb tgc tgg tgn tgo tgr tgt tgu tnb tnc tng tnn tno tnr tnt to- tob toc tog ton too tor tot tou trb trc trg trn tro trr trt tru ttb ttc ttg ttn tto ttr ttt ttu tub tuc tug tun tuo tur tut tuu ubb ubc ubg ubn ubo ubr ubt ubu ucb ucc ucg ucn uco ucr uct ucu ugb ugc ugg ugn ugo ugr ugt ugu un- unb unc ung unn uno unr unt unu uob uoc uog uon uoo uor uot ur- urb urc urg urn uro urr urt uru utb utc utn uto utr utt utu uuc uug uun uur uut uuu

bbbb bbng bbrc bbrg bcbc bcbg bccc bcnu bcor bcru bctc bcuc bgon bgun bnoc bnor bnrr bobb bobo bobu boco bocu bogg bogo bogt bonc bong bonn bono bont bonu boob booc boog boon boor boot bor- borg born boro borr bort boru botb botn boto bott boun bour bout brcb brno brob broc brog bron broo bror brot brou brrr brtc bruc brug brun brut btcc btob btor btrc btrt bttb bubb bubo bubu bucc buco bucu bugg bugo bunb bung bunn buno bunt bunu buon bur- burb burg burn buro burr burt buru but- buto butt c-bo cbbc cbcc cbcn cbcr cbct cbcu cbgb cbot cbrn cbrt cbtc ccbc ccbn cccb cccc cccu ccgc ccgt ccnb ccnc ccnr ccnu ccob ccoc ccrc ccrg ccrt cctb cctc cctt ccuc ccut cgcc cgcg cgro cgtu cnbc cnco cnrc cnrr cnrt cntc cntr cnut cobb cobo cobu coco coct cocu cogo con- conc cong conn cono cont coob coon coot cor- corb corc corg corn coro corr cort cotb cotc cotn coto cott cotu coub coun cour cout crbc crbu crcc crcr crob croc cron croo cror crot crrt crtc crub crug crun crut ctgu ctor ctot ctrc ctrn cttn cub- cubb cucc cucn cuno cunt cuon curb curn curo curr curt cut- cutc cuto cutt gbbo gbon gc-c gcbc gccc gcrg gctc ggbt gggg ggrn gncc gngc gnoo gnrc gnrr gobo gocr gogo gon- gong gonn gono gonu goog goon goor goot gorb gorg gorn goro gorr gort goto gott gou- goug goun gour gout grbr grcc grob groc grog gron groo gror grot grou grrr grtc grub grug grun grur grut gtbr gtco gtcr gubb gubu gugb gugg gugu gung gunn gunt gurb gurg gurn guro gurr gurt guru guto gutt gutu nbbc nbbo nbcc nbco ncbc nccc nccn nccr ncct nccu ncgr ncnc ncoc ncor ncrc nctc nctr ngon ngor ngou ngtn ngur nguu nngn nnnn nnot nntn nobc nobo nobu noco noct nogg nogo nogt non- nong nonn nono nont nonu noo- noob noon nooo noor noot nor- norb norc norg norn noro norr nort not- noto nott noun nour nout nroc nron nrrc ntbc ntcc ntnu ntrc ntru ntto nttr ntuc nubc nucu nunc nung nunn nuno nunt nuoc nuon nurc nurn nurr nurt nuru nutt nutu obbo obon obor obot obro ocbc occc occn occt ocon ocro ocrr oct- octo ocur ogb ogog ogon ogou ogro ogun onc- onco onct ongo ongu onno onon onor ont- ontc onto onur onut oocr oont oooo oort ootb orbb orbo orbu orco orgn orgo ornc orno oro- oron oror orot orro ortc orto orub oto- otog oton otoo otor otro otto ottu otur oucc oun- oung our- ourn ouro ourt out- outb outo ouu- rbbb rbbr rcbc rcbo rccb rccc rcgc rcnr rcon rcrg rctc rctg rgtr rnbr rnco rnnt rnot rnut rob- robb robo robt robu rocc roco rogg rogo ronc rong rono ront roob roog roon