b-u bbb bbd bbi bbn bbr bbs bbt bbu bby bdb bdd bdi bdr bds bdt bdu bdy bi- bib bid bii bin bir bis bit biu biy bnb bnd bni bnn bnr bns bnt bnu brb brd bri brn brr brs brt bru bry bsb bsd bsi bsn bsr bss bst bsu bsy btb btd bti btn btr bts btt btu bty bub bud bui bun bur bus but buu buy by- byd byi byn byr bys byt byu dbb dbd dbi dbn dbr dbs dbt dbu dby ddb ddd ddi ddn ddr dds ddt ddu ddy di- dib did dii din dir dis dit diu diy dnb dnd dni dnn dnr dns dnt dny drb drd dri drn drr drs drt dru dry dsb dsd dsi dsn dsr dss dst dsu dsy dtb dtd dti dtn dtr dts dtt dtu dty dub dud dui dun dur dus dut duy dy- dyb dyd dyn dyr dys dyu dyy i-d ibb ibd ibi ibn ibr ibs ibt ibu iby idb idd idi idn idr ids idt idu idy iib iid iii iin iir iis iit iiu in- inb ind ini inn inr ins int inu iny ir- irb ird iri irn irr irs irt iru iry is- isb isd isi isn isr iss ist isu isy itb itd iti itn its itt itu ity iu- iub iud iui iur ius iut iyr iys iyt iyy n-i nbb nbd nbi nbn nbr nbs nbt nbu ndb ndd ndi ndn ndr nds ndt ndu ndy nib nid nii nin nir nis nit niu nnb nni nnn nns nnt nnu nrb nrd nri nrn nrr nrs nrt nru nry nsb nsd nsi nsn nsr nss nst nsu nsy ntb ntd nti ntn ntr nts ntt ntu nub nud nui nun nur nus nut nuu nuy nyd nyn nys nyt nyu nyy rbb rbd rbi rbn rbr rbs rbt rbu rdb rdd rdi rdn rdr rds rdt rdu rdy rib rid rii rin rir ris rit riy rnb rnd rni rnn rnr rns rnt rnu rny rrb rrd rri rrn rrr rrs rrt rru rsb rsd rsi rsn rsr rss rst rsu rtb rtd rti rtn rtr rts rtt rtu rty rub rud rui run rur rus rut ruu ruy ry- ryd ryn ryr rys ryu ryy sbb sbd sbi sbn sbr sbs sbt sbu sby sdb sdd sdi sdn sdr sds sdt sdu sdy sib sid sii sin sir sis sit siu snb snd sni snn snr sns snt snu sny sr- srb srd sri srn srr srs srt sry ss- ssb ssd ssi ssn ssr sss sst ssu stb std sti stn str sts stt stu sty sub sud sui sun sur sus sut suu suy sy- syb syd syi syn syr sys syt syu tbb tbd tbi tbn tbr tbs tbt tbu tdb tdd tdi tdn tdr tds tdt tdu tdy tib tid tii tin tir tis tit tiu tiy tnb tnd tni tnn tnr tns tnt trb trd tri trn trr trs trt tru try tsb tsd tsi tsn tsr tss tst tsu tsy ttb ttd tti ttn ttr tts ttt ttu tty tub tud tui tun tur tus tut tuu tuy tyd tyn tyr tys tyt ubb ubi ubn ubr ubs ubt ubu uby 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 uny ur- urb urd uri urn urr urs urt uru ury usb usd usi usn usr uss ust usu utb utd uti utn utr uts utt utu uty uun uur uus uut uuu uyi uys uyu ybi ybr ybs yby ydn yds ydt ydy yid yii yin yir yis yit ynd ynn yns ynu yny yrn yrs yrt yru ysb ysi ysr yss yst ysu ysy ytd ytn ytr yts ytt ytu yud yui yun yur yus yut yuu yuy yyb yys yyt yyu yyy