b-u bbb bbn bbo bbr bbs bbt bbu bnb bnn bno bnr bns bnt bnu bob bon boo bor bos bot bou brb brn bro brr brs brt bru bsb bsn bso bsr bss bst bsu btb btn bto btr bts btt btu bub bun buo bur bus but buu nbb nbn nbo nbr nbs nbt nbu nnb nnn nno nns nnt nnu no- nob non noo nor nos not nou nrb nrn nro nrr nrs nrt nru nsb nsn nso nsr nss nst nsu ntb ntn nto ntr nts ntt ntu nub nun nuo nur nus nut nuu ob- obb obn obo obr obs obt obu on- onb onn ono onr ons ont onu oo- oob oon ooo oor oos oot or- orb orn oro orr ors ort oru os- osb osn oso osr oss ost osu ot- otb otn oto otr ots ott otu ou- oun ouo our ous out rbb rbn rbo rbr rbs rbt rbu rnb rnn rno rnr rns rnt rnu rob ron roo ror ros rot rou rrb rrn rrr rrs rrt rru rsb rsn rso rsr rss rst rsu rtb rtn rto rtr rts rtt rtu rub run ruo rur rus rut ruu sbb sbn sbo sbr sbs sbt sbu snb snn sno snr sns snt snu sob son soo sor sos sot sou sr- srb srn sro srr srs srt ss- ssb ssn sso ssr sss sst ssu stb stn sto str sts stt stu sub sun suo sur sus sut suu tbb tbn tbo tbr tbs tbt tbu tnb tnn tno tnr tns tnt to- tob ton too tor tos tot tou trb trn tro trr trs trt tru tsb tsn tso tsr tss tst tsu ttb ttn tto ttr tts ttt ttu tub tun tuo tur tus tut tuu ubb ubn ubo ubr ubs ubt ubu un- unb unn uno unr uns unt unu uob uon uoo uor uos uot ur- urb urn uro urr urs urt uru usb usn uso usr uss ust usu utb utn uto utr uts utt utu uun uur uus uut uuu

-ous bbbb bbbs bnor bnrr bnss bobb bobo bobs bobu bonn bono bons bont bonu boob boon boor boos boot bor- born boro borr bors bort boru bosn boso boss bost bosu botb botn boto bots bott boun bour bous bout brno brns brob bron broo bror bros brot brou brrr brrs brsb brsr brst brun brus brut bsns bson bsos bsts btob btor btrt btss bttb btus bubb bubo bubs bubu bunb bunn buno buns bunt bunu buon bur- burb burn buro burr burs burt buru buss bust busu but- buto buts butt buus nbbo nnnn nnos nnot nnss nntn nobo nobs nobu non- nonn nono nons nont nonu noo- noob noon nooo noor noos noot nor- norb norn noro norr nors nort nos- noss nost nosu not- noto nots nott noun nour nous nout nron nrts nsbo nsnr nsos nsou nssb nsso nssr nsss nsts nstu nsub ntnu ntru ntsb ntss ntsu ntto nttr nubs nunn nuno nuns nunt nuon nurn nurr nurs nurt nuru nuss nust nusu nuts nutt nutu obbo obon obor obos obot obro obsn obsr obss obst obts obus onno onon onor onos onso onst ont- onto onur onus onut oons oont oooo ooos oort oost ootb oots oous orbb orbo orbs orbu orno orns oro- oron oror oros orot orro orrs orso orsu orto orts orub orus osno osnr osoo osor osos osro ossb osso ossu ostr osts osun otbs oto- oton otoo otor otos otro otrs otso otsu otto otts ottu otur otus oubs oun- our- ourn ouro ours ourt oust out- outb outo outs ouu- rbbb rbbr rbbs rbss rbst rnbr rnnt rnot rnut rob- robb robo robs robt robu rono rons ront roob roon roor roos root roro rort roru roso ross rost rotn roto rotr rots rott roub roun rous rout rrrr rrun rsnn rsno rsnr rsos rsts rstu rtns rtss rtts rubb rubs rubu runn runo runs runt ruro rurs ruru ruso russ rust rusu ruto ruts rutt rutu ruun s-os sbbs sbor sbot sbst sbtn sbus snns snob snoo snor snos snot snrs sntr snub snur snus sobo sobr sobs sobt sobu son- sono sons sont sonu soon soor soos soot sorb sorn soro sorr sors sort soru soso soss sost sotn soto sots sotu soun sour sous sout srnn srno sros srtr srub ssbn ssbr ssns ssot ssrs sssb ssss sstb ssts stbs stnn stnr stns stob ston stoo stor stos stot stou strn stro strs stru stss sttr stub stun stur stus stut sub- subb subo subs sun- sunb sunn suno suns sunt sunu suor suos sur- surn suro surr surs surt suru sus- suso suss sust susu suto sutu suus tbbs tbrb tbst tnts tnut tobo tobs tobt tobu tonb tonn tono tons tonu toon toor toos toot torn toro torr tors tort toru tosb toso toss tost tosu toto totr tots tott toun tour tous tout trno tron troo tros trot trou trst trtr trub trun trus trut truu tsob tsos tsou tssr tsst tsts tsun ttbb tton ttss tttt tubb tubo tubr tubs tubu tunb tunn tuno tuns tunu tuor tuos turb turn turo turr turs turt turu tuss tust tuto tuts tutt tutu tuuo ubbo ubon ubos unno unns unon unos unro unrs uns- unso unst untb unto unts unus unut uor- urbs urns uro- uroo urso urss ursu urts urun urur urus urut usbr usbs usno usnr usnu usos ussb ussr usss usst ussu ustb usto usts usun usus utor utto uttu uuno uuuu

bbuss bo-bo bobos bobr bobst bobts bonon bonos bonou bonsu bonus bonut boobs boons boont boorn boors boort booru boost boots borbo born- borno borns bornt bornu boro- boron boroo boros borot borou borro borst borsu borts borun borus borut bosns boson bosor bosso bosun bosut boton botos botou botro botts bottu botun botus bourn bours boust bouto bouts brobo brobs bronn brons bront broon broos bross broto broun