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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def coupl_model5(self):
 """ Toggle switch. """

        self.Coupl = -0.2*self.Adj
        self.Coupl[2,0] *= -1
        self.Coupl[3,0] *= -1
        self.Coupl[4,1] *= -1
        self.Coupl[5,1] *= -1