b-u bbb bbi bbl bbn bbr bbt bbu bi- bib bii bil bin bir bit biu blb bli bll bln blr blt blu bnb bni bnl bnn bnr bnt bnu brb bri brl brn brr brt bru btb bti btl btn btr btt btu bub bui bul bun bur but buu ibb ibi ibl ibn ibr ibt ibu iib iii iil iin iir iit iiu il- ilb ili ill iln ilr ilt ilu in- inb ini inl inn inr int inu ir- irb iri irl irn irr irt iru itb iti itl itn itt itu iu- iub iui iur iut lbb lbi lbl lbr lbt lbu lib lii lil lin lir lit liu llb lli lll lln llr llt llu lnb lni lnl lnn lnr lnt lnu lrb lri lrn lrr lrt lru ltb lti ltl ltr ltt ltu lub lui lul lun lur lut luu n-i nbb nbi nbl nbn nbr nbt nbu nib nii nil nin nir nit niu nlb nli nll nln nlr nlt nlu nnb nni nnl nnn nnt nnu nrb nri nrl nrn nrr nrt nru ntb nti ntn ntr ntt ntu nub nui nul nun nur nut nuu rbb rbi rbl rbn rbr rbt rbu rib rii ril rin rir rit rli rll rln rlr rlt rlu rnb rni rnn rnr rnt rnu rrb rri rrl rrn rrr rrt rru rtb rti rtl rtn rtr rtt rtu rub rui run rur rut ruu tbb tbi tbl tbn tbr tbt tbu tib tii til tin tir tit tiu tli tll tln tlr tlt tlu tnb tni tnl tnn tnr tnt trb tri trl trn trr trt tru ttb tti ttl ttn ttr ttt ttu tub tui tul tun tur tut tuu ubb ubi ubl ubn ubr ubt ubu uib uii uil uin uir uit uiu ulb uli ull uln ulr ult ulu un- unb uni unl unn unr unt unu ur- urb uri url urn urr urt uru utb uti utl utn utr utt utu uun uur uut uuu

bbbb bbin bblb bibb bibi bibl biin bili bill bilt bilu bin- bini binn bint binu birb biri birl birn birr birt biru bitt bitu blbt blin blir blit blni blub blur blut bnib bnin bnrr bril brin brit brrr brun brut btrt bttb bubb bubi bubu buin buir buit buiu bulb buli bull bult bulu bunb buni bunn bunt bunu bur- burb buri burl burn burr burt buru but- buti butt ibri ibtb ibtl iiii iiit iitr iitt ilin ilir ilit ill- illi illt ilni ilut init inni innr innu inri inti intl intn intr intu inui inul inun iri- iril irin irlb irri irti irul irun itil itin itll itri itur iuiu lblr lbrt libr libu liii liin liir lilb lili lill lilt lilu linn lint liri lirl lirn lirr lirt liru litb liti litl litr litt litu liun liut llll lrrr ltbl ltib ltnt lttr luin luit luli lull lulu luni lunn lunt luri lurt luti n-ii nbti nibi niir niit niiu nili nill nilt nilu nini ninl nirt niru nitb niti nitr niur nlrb nnit nnnn nntn nrlb nrrl nrtl ntnu ntrl ntru nttr ntui nubi nubl nuin nuit nuli null nunn nunt nuri nurl nurn nurr nurt nuru nutt nutu rbbb rbbr rib- ribu riin rill rilu rinn riri riti ritl ritt ritu rlin rnbr rnin rnli rnnt rnut rrrr rrun rtlt rubb rubi rubu ruin ruit rull runi runn runt ruri ruru ruti rutl rutt rutu ruun tbil tbit tbrb tibi tibu tiit tiiu till tiln tilr tilt tini tinn tint tinu tirb tiri tirl tirr tiru titi titt titu tlli tnut tri- trib tril trin trit trtr trub trun trut truu ttbb tttt ttul tubb tubr tubu tuil tuin tuit tuiu tuli tull tulu tunb tuni tunn tunu turb turi turn turr turt turu tuti tutl tutt tutu ubbi ubii ubir ubit ubli uint uirr ulli ullr ulti ultt ulul uni- unii unin unir unit unni untb unut urbi urib urin uriu urni urri urun urur urut util utin utri utti uttu uulu uuni uuri uuuu

bibin bibri bilbi bili- bilin billi billu bilut binit binub birin birni birun birur bitit bitru bitti bitun blini blinn blirt blitt blunt blurb blurr blurt brill brini brinn brint britt brrrr bruin bruit bruiu brull bruni brunn brunt bruri bruun btr-t built buirn bulb- bulbi bulin buliu bull- bulli bulti bulul bulun bulut bunin bunun bunut burin burli burn- burnt burri burru burtt burun burut butin butit butut ibbur ibill iblin ibtin iiiii iitti iiuni illin illit illui iltur ilulu inbin inili inini innit inniu innti inrun intil inuit inurn irbit irill irinn irrit itbit ittti itu-r itu-t ituni ituri iturn ituru itutu iuliu iunit libin libri libru libun lilin liliu lilli lilun linin linlu liril lirui litir littb litti litui liuli lubin lubun lubur lulin lulli lulul luni- lunin lurin lurun lutin lutui luuri nibbi niibi nilin nilit ninib ninti nintu ninur ninut nirit nitin nitr- nitti ntini ntnui nu-nu nuiit nulli nulti nunit nunni nunun nurin nurit nurlu nurri nurun nutil nutri ribbi ribin rintt rubbi rubin ruili ruiru rulli runin runit rutin rutli rutul ruutu t-nut tbill tbtbt tbutt ti-ti tibbi tibbu tibin tibni tibur tilli tinli tinui tinun tirit tirli tirru tirtl tirur titii titil titin titli titti tllbr tllnn tntnt tribu triin trill trini trit- tritn tritt trubu truit trull ttttt tubi- tubin tubli tubri tubul tuili tulin tulir tului tulun turbi turbt turin turit turn- turnt turnu turri turtu turul turut tutin tutli tutti tutun tuubi tuuli tuuri tuuru u-bit u-n-i u-nii ubirr uitti ullin ullur ululu uluru uluti unbit unini uninn uniti unlit unnun unnur unnut unrun until unurn urin- urtlu urubu uruit uruli ururi uruti urutu utili uttur uturn uturu uuuuu

b-unit bbbbbb bibiri bibiru bilbul billin billit binbit biribi birini birtin bitblt bittil bittur bituin biturn blublu bribir bribri britil brubru bruill brulin brunii brutii brutti bububu bulbil bulbul bullir bullit buntil burbur buriti burlin burnin burnut burtin bururi burutu butlin buttin buttir