A (security protocol) can be signed.Logical formLearned from2 sentences. Comic books can be signed.Logical formLearned from2 sentences. An interim can be signed.Logical formLearned from2 sentences. Testaments can be signed.Logical formLearned from2 sentences. A trade can be signed.Logical formLearned from2 sentences. A (paper version) can be signed.Logical formLearned from2 sentences. A (sponsor agreement) can be signed.Logical formLearned from2 sentences. Signs can be signed.Logical formLearned from2 sentences. A (commanding midfield play) can be signed.Logical formLearned from2 sentences. A military order can be signed.Logical formLearned from2 sentences. A broken bat can be signed.Logical formLearned from2 sentences. A doodle can be signed.Logical formLearned from2 sentences. A round can be signed.Logical formLearned from2 sentences. A forgery can be signed.Logical formLearned from2 sentences. (Paper bags) can be signed.Logical formLearned from2 sentences.