Determine the number of maximal connected intervals in [-10, 10] where the function f(x) = -5(-1|(-3cos(3πx + 3)) + 1| - 3)^2 + 2(-1|(-3cos(3πx + 3)) + 1| - 3) - 5 is strictly decreasing.

Present the answer in LaTex format: \boxed{Your answer}
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