Enter a clue or pattern or both:
The Clue
License prerequisite, often (4 letter answer)
The Answer
TEST
Tags
Notes
The answer TEST is seen frequently, appearing about once every 60 puzzles.
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Check
Checkup
Exam
Examination
Examine
Eye ___
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Midterm, for one
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Sampling
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Classroom event
Clinical study
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Dry run
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Kind of pilot
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Lab routine
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Makeup, e.g.
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Kind of case or pilot
Word after high or road