PU, can you email me (firstname.lastname@example.org) the names of the lists, and I'll look for them directly? Very sorry you're they've gone missing, but I feel pretty confident they still exist and haven't been permanently lost. Will look into it as soon as I have their names and verify they're still in the db.
I'm sure John will restore both lists presently, but just in case, these are the cached versions of “Units of Language�?—I don't know what the other list was. Adding words automatically is reasonably easy using iMacros.