b-u bbb bbe bbl bbn bbt bbu bbx be- beb bee bel ben bet beu bex blb ble bll bln blt blu blx bnb bne bnl bnn bnt bnu bnx btb bte btl btn btt btu btx bub bue bul bun but buu bux bxb bxl bxn bxx ebb ebe ebl ebn ebt ebu ebx eeb eee eel een eet eex elb ele ell eln elt elu elx en- enb ene enl enn ent enu etb ete etl etn ett etu etx eu- eub eue eul eun eut eux ex- exe exl ext exu exx lbb lbe lbl lbt lbu lbx leb lee lel len let leu lex llb lle lll lln llt llu lnb lne lnl lnn lnt lnu ltb lte ltl ltt ltu ltx lub lue lul lun lut luu lux lxx nbb nbe nbl nbn nbt nbu nbx ne- neb nee nel nen net neu nex nlb nle nll nln nlt nlu nlx nnb nne nnl nnn nnt nnu ntb nte ntn ntt ntu ntx nub nue nul nun nut nuu nux nxl nxt t-x tbb tbe tbl tbn tbt tbu te- teb tee tel ten tet teu tex tle tll tln tlt tlu tlx tnb tne tnl tnn tnt tnx ttb tte ttl ttn ttt ttu ttx tub tue tul tun tut tuu tux txe txl txn txt txu ubb ube ubl ubn ubt ubu ubx ueb uee uel uen uet ulb ule ull uln ult ulu un- unb une unl unn unt unu unx utb ute utl utn utt utu utx uue uun uut uuu uxb uxt uxu xbe xbl xbx xee xel xen xet xeu xex xlb xlt xnu xtx xue xul xun xxl xxx