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When printed in capitals (as follows), what do these 11 letters of the alphabet - and none of the 15 others - have in common?

B, C, D, G, J, O, P, Q, R, S, U.

Here is the SOLUTION.

THE SOLUTION:

The letters are all drawn with at least one curve. The other letters - A, E, F, H, I, K, L, M, N, T, V, W, X, Y, Z - are all drawn using only straight lines.