For the function f(x) = (2(-1|(-2sin(2πx - 1) + 3)| - 2))/(-1(-1|(-2sin(2πx - 1) + 3)| - 2) + 2), 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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