b-u bbb bbi bbl bbn bbr bbs bbu bi- bib bii bil bin bir bis biu blb bli bll bln blr bls blu bnb bni bnl bnn bnr bns bnu brb bri brl brn brr brs bru bsb bsi bsl bsn bsr bss bsu bub bui bul bun bur bus buu ibb ibi ibl ibn ibr ibs ibu iib iii iil iin iir iis iiu il- ilb ili ill iln ilr ils ilu in- inb ini inl inn inr ins inu ir- irb iri irl irn irr irs iru is- isb isi isl isn isr iss isu iu- iub iui iur ius lbb lbi lbl lbr lbs lbu lib lii lil lin lir lis liu llb lli lll lln llr lls llu lnb lni lnl lnn lnr lns lnu lrb lri lrn lrr lrs lru lsb lsi lsl lsn lsr lss lsu lub lui lul lun lur lus luu n-i nbb nbi nbl nbn nbr nbs nbu nib nii nil nin nir nis niu nlb nli nll nln nlr nls nlu nnb nni nnl nnn nns nnu nrb nri nrl nrn nrr nrs nru nsb nsi nsl nsn nsr nss nsu nub nui nul nun nur nus nuu rbb rbi rbl rbn rbr rbs rbu rib rii ril rin rir ris rli rll rln rlr rls rlu rnb rni rnn rnr rns rnu rrb rri rrl rrn rrr rrs rru rsb rsi rsl rsn rsr rss rsu rub rui run rur rus ruu sbb sbi sbl sbn sbr sbs sbu sib sii sil sin sir sis siu slb sli sll sln slr sls slu snb sni snl snn snr sns snu sr- srb sri srl srn srr srs ss- ssb ssi ssl ssn ssr sss ssu sub sui sul sun sur sus suu ubb ubi ubl ubn ubr ubs ubu uib uii uil uin uir uis uiu ulb uli ull uln ulr uls ulu un- unb uni unl unn unr uns unu ur- urb uri url urn urr urs uru usb usi usl usn usr uss usu uun uur uus uuu

bbbb bbbs bbin bblb bbls bibb bibi bibl bibs biin biis bili bill bils bilu bin- bini binn bins binu birb biri birl birn birr birs biru bis- bisl biss bisu blin blir blis blls blni blss blub blur blus bnib bnin bnrr bnss bril brin bris brls brns brrr brrs brsb brsr brun brus bsin bsns bubb bubi bubs bubu buin buir buis buiu bulb buli bull buls bulu bunb buni bunn buns bunu bur- burb buri burl burn burr burs buru busi buss busu buus ibis ibns ibri ibsn ibss ibus iiii iiis iirs iisi iisr iisu ilin ilir ilis ill- illi ills ilni ilus inis inni innr inns innu inri inrs inss insu inui inul inun inus iri- iril irin iris irlb irri irrs irul irun irus isbl isbn isil isin isis isls isri issi issr isss issu isus iuiu iuss lblr lbrs libr libs libu liii liin liir liis lilb lili lill lils lilu linn lins liri lirl lirn lirr lirs liru lisi liss lisu liun lius llbs llll lrrr ls-r lsbu lssr lubs luin luis luli lull lulu luni lunn luns luri lurs lusi luss n-ii nibi nibs niir niiu nili nill nils nilu nini ninl nins nirs niru nisi nisl niss nisu niur nlls nlrb nnls nnnn nnsl nnss nrlb nrrl nsin nsis nslr nsls nsnr nsrl nssb nssr nsss nsub nubi nubl nubs nuin nuli null nunn nuns nuri nurl nurn nurr nurs nuru nusi nusl nuss nusu rbbb rbbr rbbs rbis rbsl rbss rib- ribs ribu riin riis rill rilu rinn riri rirs risi riss risu rius rlin rlls rnbr rnin rnli rrrr rrun rsbi rsis rsnn rsnr rssl rubb rubi rubs rubu ruin ruis rull runi runn runs ruri rurs ruru rusi russ rusu ruun s-ib s-ii sbbs sbsi sbus sibi sibs sibu sil- sili sill sils silu sini sinn sins sinu siri sirr sirs siru sisi siss sisu siui sius sl-i slib slir slln slrn slrs slsu slub slur snib snir snns snrs snub snur snus srib sris srni srnn srub ssbn ssbr ssin ssis ssns ssri ssrl ssrs sssb sssi ssss sub- subb subi subl subs suin suir suis sul- suli sull sulu sun- sunb suni sunn suns sunu sur- suri surn surr surs suru sus- susi suss susu suus ubbi ubii ubir ubis ubli ubls uirr ulli ullr ulul ulus uni- unii unin unir unis unni unns unrs uns- unus urbi urbs urib urin uris uriu urls urni urns urri ursi urss ursu urun urur urus usbl usbr usbs usin usis uslu usnr usnu ussb ussr usss ussu usui usul usun usus uulu uuni uuri uusi uuuu

bbuss bibbs bibin bibis bibri bibus bilbi bili- bilin bilis billi bills billu bilsi binns binub birin birls birni birns birrs birun birur bisin blini blinn bliss blubs blurb blurr blurs brill brini brinn brins brisb brisi briss brrrr bruin bruis bruiu brull bruni brunn bruns bruri bruss bruun bsins buirn bulb- bulbi bulbs bulin bulis buliu bull- bulli bulls bulul bulun bulus bunin bunun bunus burbs burin burli burls burn- burns burri burrs burru burun burus busin busir bussu busur busuu ibbur ibill iblin iblis iiiii iiris iisir iiuni ilisu illin illui illus ilulu inbin inili inini innis inniu inrun insin insrr insub insul inurn inuus irbis irill irinn iris- iriss irisu irssi is-is isbns isbul isili isill isisi islin isrib issru issus issuu isuli isuus iuliu iulus libin libis libri libru libun libus liisi lilin lilis liliu lilli lilun lilus linin linlu linns linus liril lirui lisin lisis liss- lissu liuli llrrs lubin lubun lubur luins lulin lulli lulls lulul lulus luni- lunin lunns lurin lurun lusin lusis lusus luuri n-sub nibbi niibi niirs nilin nilus ninib ninur ninus nisil nisin nisli nissl nisus nu-nu nubus nulli nulls nunni nunns nunun nurin nuris nurlu nurri nursu nurun nurus nusus ribbi ribin riisu rills rinns rinsi rinus risin risus rubbi rubin rubis rubus ruili ruins ruiru rulli runin rusin