Instructors may be listed.Logical formLearned from7 sentences. An instructor may change a grade.Logical formLearned from7 sentences. A permission may pertain-to an instructor.Logical formLearned from7 sentences. Service can be at a rank of instructor.Logical formLearned from7 sentences. A student can be to (instructor ratio).Logical formLearned from7 sentences. (Flight instructors) can be qualified.Logical formLearned from7 sentences. An instructor may be taught.Logical formLearned from7 sentences. Efforts may pertain-to an instructor.Logical formLearned from7 sentences. Instructors may prepare students.Logical formLearned from7 sentences. Some grade may be awarded at a discretion of an instructor.Logical formLearned from7 sentences. Instructors may have an obligation.Logical formLearned from7 sentences. Standards may pertain-to an instructor.Logical formLearned from7 sentences. Instructors can be for a workshop.Logical formLearned from7 sentences. An instructor may make sure.Logical formLearned from7 sentences. Students may meet with instructors.Logical formLearned from7 sentences.