-ol bbb bbd bbl bbn bbo bdb bdd bdl bdo blb bld bll bln blo bnb bnd bnl bnn bno bob bod bol bon boo dbb dbd dbl dbn dbo ddb ddd ddl ddn ddo dl- dlb dld dll dlo dnb dnd dnl dnn dno dob dod dol don doo lbb lbd lbl lbo ldb ldd ldl ldn ldo llb lld lll lln llo lnb lnd lnl lnn lno lob lod lol lon loo nbb nbd nbl nbn nbo ndb ndd ndl ndn ndo nlb nld nll nln nlo nnb nnl nnn nno no- nob nod nol non noo ob- obb obd obl obn obo odb odd odl odn odo olb old oll oln olo on- onb ond onl onn ono oo- oob ood ool oon ooo