b-u bbb bbd bbi bbl bbr bbs bbu bdb bdd bdi bdl bdr bds bdu bi- bib bid bii bil bir bis biu blb bld bli bll blr bls blu brb brd bri brl brr brs bru bsb bsd bsi bsl bsr bss bsu bub bud bui bul bur bus buu dbb dbd dbi dbl dbr dbs dbu ddb ddd ddi ddl ddr dds ddu di- dib did dii dil dir dis diu dl- dlb dld dli dll dlr dls dlu drb drd dri drl drr drs dru dsb dsd dsi dsl dsr dss dsu dub dud dui dul dur dus i-d ibb ibd ibi ibl ibr ibs ibu idb idd idi idl idr ids idu iib iid iii iil iir iis iiu il- ilb ild ili ill ilr ils ilu ir- irb ird iri irl irr irs iru is- isb isd isi isl isr iss isu iu- iub iud iui iur ius lbb lbd lbi lbl lbr lbs lbu ldb ldd ldi ldl ldr lds ldu lib lid lii lil lir lis liu llb lld lli lll llr lls llu lrb lrd lri lrr lrs lru lsb lsd lsi lsl lsr lss lsu lub lud lui lul lur lus luu rbb rbd rbi rbl rbr rbs rbu rdb rdd rdi rdl rdr rds rdu rib rid rii ril rir ris rld rli rll rlr rls rlu rrb rrd rri rrl rrr rrs rru rsb rsd rsi rsl rsr rss rsu rub rud rui rur rus ruu sbb sbd sbi sbl sbr sbs sbu sdb sdd sdi sdl sdr sds sdu sib sid sii sil sir sis siu slb sld sli sll slr sls slu sr- srb srd sri srl srr srs ss- ssb ssd ssi ssl ssr sss ssu sub sud sui sul sur sus suu ubb ubi ubl ubr ubs ubu udb udd udi udl udr uds udu uib uid uii uil uir uis uiu ulb uld uli ull ulr uls ulu ur- urb urd uri url urr urs uru usb usd usi usl usr uss usu uur uus uuu

bbbb bbbs bbdd bblb bbls bd-r bdii bdls bdsd bibb bibi bibl bibs bidi bidr bids bidu biis bild bili bill bils bilu birb bird biri birl birr birs biru bis- bisd bisl biss bisu bldr blir blis blls blss blub blud blur blus brds brid bril bris brls brrr brrs brsb brsr brud brus bsbd bsdl bsrd bssd bubb bubi bubs bubu budb budd budi budl buds budu buid buir buis buiu bulb buld buli bull buls bulu bur- burb burd buri burl burr burs buru busi buss busu buus dbls dbrs dbss dbus dddd ddss ddub dibb dibs didi dids didu diii diis dili dill dils dird dirl dirr dirs dis- disd disi diss dius dlbd dlib dlii dlil dlis dlrs drib dril drrs drub drui drus druu dsdr dsls dsri dsrr dssi dub- dubb dubs dubu dudd duds dudu duid duil duir duis duli dull dulu duri duru dusi duul duur ibid ibis ibrd ibri ibss ibus idid idil idir idis idli idls idss idub idus iiii iiis iirs iisd iisi iisr iisu ilir ilis ill- illd illi ills ilud ilus irds iri- irid iril iris irlb irri irrs irul irus isbd isbl isdb isds isil isis isls isri issi issr isss issu isus iuds iuiu iusd iuss lbds lblr lbrs ldls ldrs libr libs libu lidb lidl lids liii liir liis lilb lili lill lils lilu lird liri lirl lirr lirs liru lisd lisi liss lisu lius llbs lldb llds llll llud lrdd lrds lrrr ls-r lsbu lsds lsid lssr lubs ludd ludi luis luli lull lulu lurd luri lurs lusi luss rbbb rbbr rbbs rbds rbis rbsd rbsl rbss rib- ribs ribu ridd ridi rids riis rill rilu riri rirs risd risi riss risu rius rlds rlls rrrr rsbi rsdd rsdl rsds rsid rsis rssl rubb rubi rubs rubu rudd rudi rudl ruds ruid ruis rull rurd ruri rurs ruru rusi russ rusu ruud s-ib s-ii sbbs sbds sbsd sbsi sbus sdds sdib sdls sdrs sdsl sdss sdsu sibi sibs sibu sidd sidi sidr sids sil- sild sili sill sils silu siri sirr sirs siru sisd sisi siss sisu siui sius sl-i slds slib slid slir slrs slsu slub slud slur srib sris srsd srub ssbr ssdd ssid ssis ssri ssrl ssrs sssb sssi ssss sub- subb subd subi subl subs sudd sudi suds suid suir suis sul- suld suli sull sulu sur- surd suri surr surs suru sus- susd susi suss susu suus ubbi ubid ubii ubir ubis ubli ubls ubud uddi udds udid udir udsd udsl uirr uisd ulli ullr ulul ulus urbi urbs urds urdu urib uris uriu urls urri ursi urss ursu urur urus usbl usbr usbs usdl usds usis uslu ussb ussr usss ussu usui usul usus uulu uuri uusi uuuu

bbuss bdubs bibbs bibis bibri bibus biddu bidil bidlu bidri bidur bilbi bili- bilis billi bills billu bilsi birds birdu birls birrs birur blids bliss blsdb blubs bluds bluid blurb blurr blurs bridi brids brill brisb brisi briss brrrr brud- bruds bruis bruiu brull bruri bruss bssid budds buddu budur build buird bulb- bulbi bulbs bulis buliu bull- bulli bulls bulul bulus burbs burdi burds burli burls burri burrs burru burud burus busir bussu busur busuu d-bus ddddd dibri diddl diddu didus dilli dills disir diss- disur diulu dliii dribs dridu drill driss drubs druid druri dub-l dubbi dubbs dubi dubil dubul dubus duill dulid dulli dulls dullu duris dussi i-bid ibbur ibdis ibids ibill iblis idili idlib idlis idril idris idrus iiiii iiris iisir ilisu illui illus ilulu irbid irbis irid- irids irill iris- iriss irisu irssi is-is isbul isili isill isisi isrib issid issru issus issuu isuli isuus iuliu iulus libis libri libru libus liisi lilis liliu lilli lilus liril lirui lisis liss- lissu liuli llrrs lubur luddu ludus lulli lulls lulul lulus lurid lusis lusus luuri rdllr ribbi riisu rills risus rubbi rubid rubis rubus rudds rudli rudus ruili ruiru rulli russi s-bus s-iii