b-u bbb bbd bbe bbl bbm bbn bbt bbu bdb bdd bde bdl bdm bdt bdu be- beb bed bee bel bem ben bet beu blb bld ble bll blm bln blt blu bmb bmd bme bml bmm bmn bmt bmu bnb bnd bne bnl bnn bnt bnu btb btd bte btl btm btn btt btu bub bud bue bul bum bun but buu dbb dbd dbe dbl dbm dbn dbt dbu ddb ddd dde ddl ddm ddn ddt ddu de- deb ded dee del dem den det deu dl- dlb dld dle dll dlm dlt dlu dmb dmd dme dml dmm dmn dmt dmu dnb dnd dne dnl dnm dnn dnt dtb dtd dte dtl dtm dtn dtt dtu dub dud due dul dum dun dut ebb ebd ebe ebl ebm ebn ebt ebu ed- edb edd ede edl edm edn edt edu eeb eed eee eel eem een eet elb eld ele ell elm eln elt elu em- emb emd eme eml emm emn emt emu en- enb end ene enl enm enn ent enu etb etd ete etl etm etn ett etu eu- eub eud eue eul eun eut lbb lbd lbe lbl lbm lbt lbu ldb ldd lde ldl ldm ldn ldt ldu leb led lee lel lem len let leu llb lld lle lll llm lln llt llu lmb lmd lme lml lmm lmn lmt lmu lnb lnd lne lnl lnm lnn lnt lnu ltb ltd lte ltl ltm ltt ltu lub lud lue lul lum lun lut luu mbb mbd mbe mbl mbm mbt mbu mdb mdd mde mdl mdm mdn mdt mdu meb med mee mel mem men met meu mlb mld mle mll mlm mln mlt mlu mmb mmd mme mml mmm mmn mmt mmu mnb mne mnl mnm mnn mnt mnu mtb mtd mte mtl mtm mtn mtt mtu mub mud mue mul mum mun mut muu nbb nbd nbe nbl nbm nbn nbt nbu ndb ndd nde ndl ndm ndn ndt ndu ne- neb ned nee nel nem nen net neu nlb nld nle nll nlm nln nlt nlu nmb nmd nme nml nmm nmn nmt nmu nnb nne nnl nnm nnn nnt nnu ntb ntd nte ntm ntn ntt ntu nub nud nue nul num nun nut nuu tbb tbd tbe tbl tbm tbn tbt tbu tdb tdd tde tdl tdm tdn tdt tdu te- teb ted tee tel tem ten tet teu tld tle tll tlm tln tlt tlu tmb tmd tme tml tmm tmn tmt tmu tnb tnd tne tnl tnm tnn tnt ttb ttd tte ttl ttm ttn ttt ttu tub tud tue tul tum tun tut tuu ubb ube ubl ubn ubt ubu udb udd ude udl udm udn udt udu ueb ued uee uel uem uen uet ulb uld ule ull ulm uln ult ulu um- umb umd ume uml umm umn umt umu un- unb und une unl unm unn unt unu utb utd ute utl utm utn utt utu uue uum uun uut uuu