For the function f(x) = -1|(-3(-4(-1cos(2πx - 3) + 1) - 2)^2 + 3(-4(-1cos(2πx - 3) + 1) - 2) + 2) + 2| + 3, find the number of maximal connected intervals in [-10, 10] where f'(x) < 0.

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