For the function f(x) = -2|(-5(2cos(3πx - 2) + 1)^2 - 4(2cos(3πx - 2) + 1)) - 3| + 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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