b-u bbb bbl bbn bbr bbs bbu blb bll bln blr bls blu bnb bnl bnn bnr bns bnu brb brl brn brr brs bru bsb bsl bsn bsr bss bsu bub bul bun bur bus buu lbb lbl lbr lbs lbu llb lll lln llr lls llu lnb lnl lnn lnr lns lnu lrb lrn lrr lrs lru lsb lsl lsn lsr lss lsu lub lul lun lur lus luu nbb nbl nbn nbr nbs nbu nlb nll nln nlr nls nlu nnb nnl nnn nns nnu nrb nrl nrn nrr nrs nru nsb nsl nsn nsr nss nsu nub nul nun nur nus nuu rbb rbl rbn rbr rbs rbu rll rln rlr rls rlu rnb rnn rnr rns rnu rrb rrl rrn rrr rrs rru rsb rsl rsn rsr rss rsu rub run rur rus ruu sbb sbl sbn sbr sbs sbu slb sll sln slr sls slu snb snl snn snr sns snu sr- srb srl srn srr srs ss- ssb ssl ssn ssr sss ssu sub sul sun sur sus suu ubb ubl ubn ubr ubs ubu ulb ull uln ulr uls ulu un- unb unl unn unr uns unu ur- urb url urn urr urs uru usb usl usn usr uss usu uun uur uus uuu

bbbb bbbs bblb bbls blls blss blub blur blus bnrr bnss brls brns brrr brrs brsb brsr brun brus bsns bubb bubs bubu bulb bull buls bulu bunb bunn buns bunu bur- burb burl burn burr burs buru buss busu buus lblr lbrs llbs llll lrrr ls-r lsbu lssr lubs lull lulu lunn luns lurs luss nlls nlrb nnls nnnn nnsl nnss nrlb nrrl nslr nsls nsnr nsrl nssb nssr nsss nsub nubl nubs null nunn nuns nurl nurn nurr nurs nuru nusl nuss nusu rbbb rbbr rbbs rbsl rbss rlls rnbr rrrr rrun rsnn rsnr rssl rubb rubs rubu rull runn runs rurs ruru russ rusu ruun sbbs sbus slln slrn slrs slsu slub slur snns snrs snub snur snus srnn srub ssbn ssbr ssns ssrl ssrs sssb ssss sub- subb subl subs sul- sull sulu sun- sunb sunn suns sunu sur- surn surr surs suru sus- suss susu suus ubls ullr ulul ulus unns unrs uns- unus urbs urls urns urss ursu urun urur urus usbl usbr usbs uslu usnr usnu ussb ussr usss ussu usul usun usus uulu uuuu

bbuss blubs blurb blurr blurs brrrr brull brunn bruns bruss bruun bulb- bulbs bull- bulls bulul bulun bulus bunun bunus burbs burls burn- burns burrs burru burun burus bussu busur busuu llrrs lubun lubur lulls lulul lulus lunns lurun lusus n-sub nu-nu nubus nulls nunns nunun nurlu nursu nurun nurus nusus rubus s-bus slubs slurb slurs sluss snbrn snub- snubs snurl snuss ssbul sssrb sssss subbu subss sulls sulur sulus sunbl sunbs surbl surul surur surus susun susus suuns ullur ululu uluru unnun unnur unrun unsu unsub unsun unurn ursus urubu ussun uuuuu

bbbbbb blublu blurbs brubru bububu bulbul bulbus bulusu burbur lullus lunlun lurulu nbblsn nullus nurnus nurulu nusnus russus subsun suburb sunbus sunrun sunsun sununu susulu susurr ubussu unblur unburn unlull unsubs

bbbbbbb bulbuls bullrun burruss burunlu sssssss suburbs sun-sun sunburn susulus ursulus

bbbbbbbb buruburu snlssnss sunburns sussurus susurrus

buln-buln runrunrun snubsbuns

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