A critique can be valid.Logical formLearned from40 sentences. Keys can be valid.Logical formLearned from40 sentences. A record can be valid.Logical formLearned from40 sentences. A student can be valid.Logical formLearned from40 sentences. Rules can be valid.Logical formLearned from40 sentences. Cards can be valid.Logical formLearned from40 sentences. An excuse can be valid.Logical formLearned from40 sentences. Patents can be valid.Logical formLearned from40 sentences. Surveys can be valid.Logical formLearned from39 sentences. Commands can be valid.Logical formLearned from39 sentences. A (tax exemption certificate) can be valid.Logical formLearned from39 sentences. (Provider agreements) can be valid.Logical formLearned from39 sentences. A substitute can be valid.Logical formLearned from39 sentences. A sale can be valid.Logical formLearned from39 sentences. An union can be valid.Logical formLearned from39 sentences.