b-u bbb bbd bbi bbn bbr bbs bbt bbu bdb bdd bdi bdr bds bdt bdu bi- bib bid bii bin bir bis bit biu bnb bnd bni bnn bnr bns bnt bnu brb brd bri brn brr brs brt bru bsb bsd bsi bsn bsr bss bst bsu btb btd bti btn btr bts btt btu bub bud bui bun bur bus but buu dbb dbd dbi dbn dbr dbs dbt dbu ddb ddd ddi ddn ddr dds ddt ddu di- dib did dii din dir dis dit diu dnb dnd dni dnn dnr dns dnt drb drd dri drn drr drs drt dru dsb dsd dsi dsn dsr dss dst dsu dtb dtd dti dtn dtr dts dtt dtu dub dud dui dun dur dus dut i-d ibb ibd ibi ibn ibr ibs ibt ibu idb idd idi idn idr ids idt idu iib iid iii iin iir iis iit iiu in- inb ind ini inn inr ins int inu ir- irb ird iri irn irr irs irt iru is- isb isd isi isn isr iss ist isu itb itd iti itn its itt itu iu- iub iud iui iur ius iut n-i nbb nbd nbi nbn nbr nbs nbt nbu ndb ndd ndi ndn ndr nds ndt ndu nib nid nii nin nir nis nit niu nnb nni nnn nns nnt nnu nrb nrd nri nrn nrr nrs nrt nru nsb nsd nsi nsn nsr nss nst nsu ntb ntd nti ntn ntr nts ntt ntu nub nud nui nun nur nus nut nuu rbb rbd rbi rbn rbr rbs rbt rbu rdb rdd rdi rdn rdr rds rdt rdu rib rid rii rin rir ris rit rnb rnd rni rnn rnr rns rnt rnu rrb rrd rri rrn rrr rrs rrt rru rsb rsd rsi rsn rsr rss rst rsu rtb rtd rti rtn rtr rts rtt rtu rub rud rui run rur rus rut ruu sbb sbd sbi sbn sbr sbs sbt sbu sdb sdd sdi sdn sdr sds sdt sdu sib sid sii sin sir sis sit siu snb snd sni snn snr sns snt snu sr- srb srd sri srn srr srs srt ss- ssb ssd ssi ssn ssr sss sst ssu stb std sti stn str sts stt stu sub sud sui sun sur sus sut suu tbb tbd tbi tbn tbr tbs tbt tbu tdb tdd tdi tdn tdr tds tdt tdu tib tid tii tin tir tis tit tiu tnb tnd tni tnn tnr tns tnt trb trd tri trn trr trs trt tru tsb tsd tsi tsn tsr tss tst tsu ttb ttd tti ttn ttr tts ttt ttu tub tud tui tun tur tus tut tuu ubb ubi ubn ubr ubs ubt ubu udb udd udi udn udr uds udt udu uib uid uii uin uir uis uit uiu un- unb und uni unn unr uns unt unu ur- urb urd uri urn urr urs urt uru usb usd usi usn usr uss ust usu utb utd uti utn utr uts utt utu uun uur uus uut uuu

bbbb bbbs bbdd bbin bd-r bdii bdin bdsd bibb bibi bibs bidi bidr bids bidu biin biis bin- bind bini binn bins bint binu birb bird biri birn birr birs birt biru bis- bisd biss bist bisu bitd bits bitt bitu bnib bnin bnrr bnss brds brdt brid brin bris brit brns brrr brrs brsb brsr brst brud brun brus brut bsbd bsin bsnd bsns bsrd bssd bsts btdt btrt btss bttb btus bubb bubi bubs bubu budb budd budi buds budu buid buin buir buis buit buiu bunb bund buni bunn buns bunt bunu bur- burb burd buri burn burr burs burt buru busi buss bust busu but- buti buts butt buus dbit dbrn dbrs dbss dbtt dbus dddd ddss ddts ddub dibb dibs didi dids didu diii diis din- dini dinn dins dint dinu dird dirr dirs dirt dis- disd disi diss dist diti dits ditt dius dnis dntt dnus dnut drib drin drit drrs drub drui drus drut druu dsdr dsri dsrr dssi dssn dsst dstn dsts dtnb dtss dub- dubb dubs dubu dudd duds dudu duid duin duir duis duit dunn duns dunt duri durn durt duru dusi dust duts duur duut ibid ibis ibns ibrd ibri ibsn ibss ibtb ibts ibus idid idin idir idis idss idts idub idun idus iiii iiis iiit iirs iisd iisi iisr iist iisu iitr iitt inbd ind- indi inds indu inid inis init inni innr inns innu inri inrs inss inst insu intd inti intn intr ints intu inui inun inus irds iri- irid irin iris irri irrs irti irts irun irus isbd isbn isbt isdb isdn isds isin isis isit isnt isri issi issr isss issu istd isti istr ists isus itbs itin itis itri itrs itsi itsu itur iuds iuiu iusd iuss iust n-ii nbti nddb ndnt ndri ndsi ndss ndut nibi nibs nidd nidi nids niir niit niiu nind nini nins nirs nirt niru nisd nisi niss nist nisu nitb niti nitr nits niur nndb nnit nnnn nnss nntn nrds nrrd nrts nsds nsdt nsin nsis nsnr nsrd nssb nssr nsss nstd nsts nstu nsub ntds ntis ntnd ntnu ntru ntsb ntss ntsu nttr ntui nubi nubs nudd nudi nuin nuit nunn nuns nunt nurd nuri nurn nurr nurs nurt nuru nusi nuss nust nusu nuts nutt nutu rbbb rbbr rbbs rbds rbis rbsd rbss rbst rib- ribs ribu ridd ridi rids riin riis rind rinn riri rirs risd risi riss rist risu riti rits ritt ritu rius rnbr rnds rnin rnnt rntd rnut rrrr rrun rsbi rsdd rsds rsid rsis rsnn rsnr rsts rstu rtdt rtnd rtns rtss rtts rubb rubi rubs rubu rudd rudi ruds ruid ruin ruis ruit rund runi runn runs runt rurd ruri rurs ruru rusi russ rust rusu ruti ruts rutt rutu ruud ruun s-ib s-ii sbbs sbds sbsd sbsi sbst sbtn sbus sdds sdib sdrs sdss sdsu sibi sibs sibu sidd sidi sidr sids siit sind sini sinn sins