Proof may pertain-to a devotion.Logical formLearned from20 sentences. Demands can be for proof.Logical formLearned from20 sentences. Proof may pertain-to knowledge.Logical formLearned from20 sentences. A shift can be in a burden of proof.Logical formLearned from20 sentences. A length may pertain-to a proof.Logical formLearned from20 sentences. A proof can be difficult.Logical formLearned from20 sentences. Proof may pertain-to a maxim.Logical formLearned from20 sentences. A person may want a proof.Logical formLearned from20 sentences. A (facie proof) can be prima.Logical formLearned from20 sentences. A (self proof) may pertain-to a person.Logical formLearned from20 sentences. A (self proof) can be humble.Logical formLearned from20 sentences. Proof may pertain-to an experience.Logical formLearned from20 sentences. A proof can be controlled.Logical formLearned from20 sentences. A proof may pertain-to an argument.Logical formLearned from20 sentences. A proof may pertain-to a principle.Logical formLearned from20 sentences.