Given the pattern , the most plausible known answer from crosswords is:
Actually, the well-known solution for this clue in The Listener or similar is — but that’s 6,2,4. useful material or knowledge crossword clue 5 2 3 4
— but that’s 5,2,10, not matching.
But given the pattern , a standard answer for “useful material or knowledge” in crossword databases is: Given the pattern , the most plausible known