Millions of persons may scratch heads.Logical formLearned from2 sentences. A cleaner may scratch.Logical formLearned from2 sentences. (Paper towels) may scratch a surface.Logical formLearned from2 sentences. A male may scratch a name on a form.Logical formLearned from2 sentences. A (center fielder) may be scratched from a lineup.Logical formLearned from2 sentences. Operations may scratch a surface.Logical formLearned from2 sentences. A person may scratch an inverted cross.Logical formLearned from2 sentences. A state may scratch physical education from a (school curriculum).Logical formLearned from2 sentences. A flight may be scratched.Logical formLearned from2 sentences. A web may scratch a surface.Logical formLearned from2 sentences. Turntablists may scratch.Logical formLearned from2 sentences. A knife may scratch glass.Logical formLearned from2 sentences. A line may be scratched across a landscape.Logical formLearned from2 sentences. (Administration officials) may scratch heads.Logical formLearned from2 sentences. Some prisoner may scratch into a (cell wall).Logical formLearned from2 sentences.