b-u bbb bbe bbl bbn bbt bbu be- beb bee bel ben bet beu blb ble bll bln blt blu bnb bne bnl bnn bnt bnu btb bte btl btn btt btu bub bue bul bun but buu ebb ebe ebl ebn ebt ebu eeb eee eel een eet elb ele ell eln elt elu en- enb ene enl enn ent enu etb ete etl etn ett etu eu- eub eue eul eun eut lbb lbe lbl lbt lbu leb lee lel len let leu llb lle lll lln llt llu lnb lne lnl lnn lnt lnu ltb lte ltl ltt ltu lub lue lul lun lut luu nbb nbe nbl nbn nbt nbu ne- neb nee nel nen net neu nlb nle nll nln nlt nlu nnb nne nnl nnn nnt nnu ntb nte ntn ntt ntu nub nue nul nun nut nuu tbb tbe tbl tbn tbt tbu te- teb tee tel ten tet teu tle tll tln tlt tlu tnb tne tnl tnn tnt ttb tte ttl ttn ttt ttu tub tue tul tun tut tuu ubb ube ubl ubn ubt ubu ueb uee uel uen uet ulb ule ull uln ult ulu un- unb une unl unn unt unu utb ute utl utn utt utu uue uun uut uuu