b-u bbb bbd bbi bbl bbn bbr bbs bbt bbu bdb bdd bdi bdl bdr bds bdt bdu bi- bib bid bii bil bin bir bis bit biu blb bld bli bll bln blr bls blt blu bnb bnd bni bnl bnn bnr bns bnt bnu brb brd bri brl brn brr brs brt bru bsb bsd bsi bsl bsn bsr bss bst bsu btb btd bti btl btn btr bts btt btu bub bud bui bul bun bur bus but buu dbb dbd dbi dbl dbn dbr dbs dbt dbu ddb ddd ddi ddl ddn ddr dds ddt ddu di- dib did dii dil din dir dis dit diu dl- dlb dld dli dll dlr dls dlt dlu dnb dnd dni dnl dnn dnr dns dnt drb drd dri drl drn drr drs drt dru dsb dsd dsi dsl dsn dsr dss dst dsu dtb dtd dti dtl dtn dtr dts dtt dtu dub dud dui dul dun dur dus dut i-d ibb ibd ibi ibl ibn ibr ibs ibt ibu idb idd idi idl idn idr ids idt idu iib iid iii iil iin iir iis iit iiu il- ilb ild ili ill iln ilr ils ilt ilu in- inb ind ini inl inn inr ins int inu ir- irb ird iri irl irn irr irs irt iru is- isb isd isi isl isn isr iss ist isu itb itd iti itl itn its itt itu iu- iub iud iui iur ius iut lbb lbd lbi lbl lbr lbs lbt lbu ldb ldd ldi ldl ldn ldr lds ldt ldu lib lid lii lil lin lir lis lit liu llb lld lli lll lln llr lls llt llu lnb lnd lni lnl lnn lnr lns lnt lnu lrb lrd lri lrn lrr lrs lrt lru lsb lsd lsi lsl lsn lsr lss lst lsu ltb ltd lti ltl ltr lts ltt ltu lub lud lui lul lun lur lus lut luu n-i nbb nbd nbi nbl nbn nbr nbs nbt nbu ndb ndd ndi ndl ndn ndr nds ndt ndu nib nid nii nil nin nir nis nit niu nlb nld nli nll nln nlr nls nlt nlu nnb nni nnl nnn nns nnt nnu nrb nrd nri nrl nrn nrr nrs nrt nru nsb nsd nsi nsl nsn nsr nss nst nsu ntb ntd nti ntn ntr nts ntt ntu nub nud nui nul nun nur nus nut nuu rbb rbd rbi rbl rbn rbr rbs rbt rbu rdb rdd rdi rdl rdn rdr rds rdt rdu rib rid rii ril rin rir ris rit rld rli rll rln rlr rls rlt rlu rnb rnd rni rnn rnr rns rnt rnu rrb rrd rri rrl rrn rrr rrs rrt rru rsb rsd rsi rsl rsn rsr rss rst rsu rtb rtd rti rtl rtn rtr rts rtt rtu rub rud rui run rur rus rut ruu sbb sbd sbi sbl sbn sbr sbs sbt sbu sdb sdd sdi sdl sdn sdr sds sdt sdu sib sid sii sil sin sir sis sit siu slb sld sli sll sln slr sls slt slu snb snd sni snl snn snr sns snt snu sr- srb srd sri srl srn srr srs srt ss- ssb ssd ssi ssl ssn ssr sss sst ssu stb std sti stl stn str sts stt stu sub sud sui sul sun sur sus sut suu tbb tbd tbi tbl tbn tbr tbs tbt tbu tdb tdd tdi tdl tdn tdr tds tdt tdu tib tid tii til tin tir tis tit tiu tld tli tll tln tlr tls tlt tlu tnb tnd tni tnl tnn tnr tns tnt trb trd tri trl trn trr trs trt tru tsb tsd tsi tsl tsn tsr tss tst tsu ttb ttd tti ttl ttn ttr tts ttt ttu tub tud tui tul tun tur tus tut tuu ubb ubi ubl ubn ubr ubs ubt ubu udb udd udi udl udn udr uds udt udu uib uid uii uil uin uir uis uit uiu ulb uld uli ull uln ulr uls ult ulu un- unb und uni unl unn unr uns unt unu ur- urb urd uri url urn urr urs urt uru usb usd usi usl usn usr uss ust usu utb utd uti utl utn utr uts utt utu uun uur uus uut uuu