b-u bbb bbd bbi bbl bbm bbr bbt bbu bdb bdd bdi bdl bdm bdr bdt bdu bi- bib bid bii bil bim bir bit biu blb bld bli bll blm blr blt blu bmb bmd bmi bml bmm bmr bmt bmu brb brd bri brl brm brr brt bru btb btd bti btl btm btr btt btu bub bud bui bul bum bur but buu dbb dbd dbi dbl dbm dbr dbt dbu ddb ddd ddi ddl ddm ddr ddt ddu di- dib did dii dil dim dir dit diu dl- dlb dld dli dll dlm dlr dlt dlu dmb dmd dmi dml dmm dmr dmt dmu drb drd dri drl drm drr drt dru dtb dtd dti dtl dtm dtr dtt dtu dub dud dui dul dum dur dut i-d ibb ibd ibi ibl ibm ibr ibt ibu idb idd idi idl idm idr idt idu iib iid iii iil iim iir iit iiu il- ilb ild ili ill ilm ilr ilt ilu im- imb imd imi iml imm imt imu ir- irb ird iri irl irm irr irt iru itb itd iti itl itm itt itu iu- iub iud iui ium iur iut lbb lbd lbi lbl lbm lbr lbt lbu ldb ldd ldi ldl ldm ldr ldt ldu lib lid lii lil lim lir lit liu llb lld lli lll llm llr llt llu lmb lmd lmi lml lmm lmr lmt lmu lrb lrd lri lrm lrr lrt lru ltb ltd lti ltl ltm ltr ltt ltu lub lud lui lul lum lur lut luu m-r mbb mbd mbi mbl mbm mbr mbt mbu mdb mdd mdi mdl mdm mdr mdt mdu mi- mib mid mii mil mim mir mit miu mlb mld mli mll mlm mlr mlt mlu mmb mmd mmi mml mmm mmr mmt mmu mrb mrd mri mrl mrm mrr mrt mru mtb mtd mti mtl mtm mtr mtt mtu mub mud mui mul mum mur mut muu rbb rbd rbi rbl rbm rbr rbt rbu rdb rdd rdi rdl rdm rdr rdt rdu rib rid rii ril rim rir rit rld rli rll rlm rlr rlt rlu rmb rmd rmi rml rmm rmr rmt rrb rrd rri rrl rrm rrr rrt rru rtb rtd rti rtl rtm rtr rtt rtu rub rud rui rum rur rut ruu tbb tbd tbi tbl tbm tbr tbt tbu tdb tdd tdi tdl tdm tdr tdt tdu tib tid tii til tim tir tit tiu tld tli tll tlm tlr tlt tlu tmb tmd tmi tml tmm tmr tmt tmu trb trd tri trl trm trr trt tru ttb ttd tti ttl ttm ttr ttt ttu tub tud tui tul tum tur tut tuu ubb ubi ubl ubr ubt ubu udb udd udi udl udm udr udt udu uib uid uii uil uim uir uit uiu ulb uld uli ull ulm ulr ult ulu um- umb umd umi uml umm umr umt umu ur- urb urd uri url urm urr urt uru utb utd uti utl utm utr utt utu uum uur uut uuu

bbbb bbdd bblb bd-r bdii bdmi bdrm bibb bibi bibl bidi bidr bidu bild bili bill bilt bilu birb bird biri birl birr birt biru bitd bitt bitu blbt bldr blim blir blit blub blud blum blur blut bmdb bmir bmmi brdm brdt brid bril brim brit brrm brrr brud brum brut btdt btrt bttb bubb bubi bubu budb budd budi budl budu buid buir buit buiu bulb buld buli bull bult bulu bum- bumb bur- burb burd buri burl burm burr burt buru but- buti butt dbit dbtt dddd ddub dibb didi didu diii dili dill dimi dimm dimu dird dirl dirr dirt diti ditt dlbd dlib dlii dlil dlit dmdt dmrb drib dril drit drub drui drum drut druu dtrl dub- dubb dubu dudd dudu duid duil duir duit duli dull dult dulu dumb dumi dumm duri durt duru duul duur duut ibbm ibid ibim ibml ibrd ibri ibtb ibtl idbm iddm idid idil idir idli idub iiii iiit iitm iitr iitt iium ilbm ilir ilit ill- illd illi illt ilmr ilrm ilud ilum ilut imbi imdb imdi imdt imid imir imit imli immi immt imri imrr irbm iri- irid iril irlb irri irti irul itil itim itll itri itum itur iuiu lblr lbrt lddm libr libu lidb lidl liii liir lilb lili lill lilt lilu limb limi liml limm limu lird liri lirl lirr lirt liru litb litd liti litl litr litt litu liut lldb llll llud lmii lmmr lrdd lrmt lrrr ltbl ltib lttr ludd ludi luit luli lull lulu lumb lumi lurd luri lurt luti mbdb mbim mddl mddm mdii mdil mdli mdud mid- midi midl miii miit mild mili mill milr milt milu mim- mimd mimi mird miri mirl mirr mirt miru mit- mitb miti mitm mitt mitu miui mldr mlii mlit mltb mltr mmdb mmdi mmdl mmii mmli mmmd mmmm mrbb mrbm mrdd mrmd mrml mrtm mrtt mrud mtbd mtlb mtld mtrl mtrr mttr mubi mudd mudi mudl mudu muid muil muir muit muld muli mull mulm mult mulu mumm mumu murd muri murl murr murt muru muti mutt mutu muut rbbb rbbr rdbm rib- ribu ridd ridi rill rilu rimi rimm rimu riri riti ritl ritt ritu rldt rlml rmll rmtu rrrr rrum rtdt rtlt rtmi rtml rubb rubi rubu rudd rudi rudl ruid ruit rull rumb rumi ruml rumm rumt rurd ruri ruru ruti rutl rutt rutu ruud tbil tbit tbrb tddb tdil tdmi tdri tibi tibu tidd tiit tiiu tild till tilr tilt timi timm timu tirb tird tiri tirl tirr tiru titi titt titu tium tldr tlli tmbr tmil tmtt tri- trib tril trim trit trmb trmd trmi trml trmu trtr trub trud trut truu ttbb ttim ttml tttt ttul tubb tubr tubu tudi tudu tuil tuim tuit tuiu tuli tull tulu tumb tumi tumu turb turd turi turm turr turt turu tuti tutl tutt tutu tuum ubbi ubid ubii ubir ubit ubli ubud uddi udid udim udir uiml uirr ulim