-ol b-u bbb bbe bbl bbo bbt bbu be- beb bee bel beo bet beu blb ble bll blo blt blu bob boe bol boo bot bou btb bte btl bto btt btu bub bue bul buo but buu ebb ebe ebl ebo ebt ebu eeb eee eel eeo eet elb ele ell elo elt elu eo- eob eoe eol eoo eot eou etb ete etl eto ett etu eu- eub eue eul eut lbb lbe lbl lbo lbt lbu leb lee lel leo let leu llb lle lll llo llt llu lob loe lol loo lot lou ltb lte ltl lto ltt ltu lub lue lul luo lut luu ob- obb obe obl obo obt obu oeb oee oel oeo oet olb ole oll olo olt olu oo- oob ool ooo oot ot- otb ote otl oto ott otu ou- oue oul ouo out tbb tbe tbl tbo tbt tbu te- teb tee tel teo tet teu tle tll tlo tlt tlu to- tob toe tol too tot tou ttb tte ttl tto ttt ttu tub tue tul tuo tut tuu ubb ube ubl ubo ubt ubu ueb uee uel uet ulb ule ull ulo ult ulu uob uoe uol uoo uot utb ute utl uto utt utu uue uut uuu