# Codeblock 7b
    def forward(self, x):
            residual = x
            print(f'original\t\t: {x.size()}')

            x = self.conv0(x)
            print(f'after conv0\t\t: {x.size()}')

            x = self.conv1(x)
            print(f'after conv1\t\t: {x.size()}')

            x = self.semodule(x)
            print(f'after semodule\t\t: {x.size()}')

            x = self.conv2(x)
            print(f'after conv2\t\t: {x.size()}')

            if self.add:
                x += residual
                print(f'after summation\t\t: {x.size()}')

            return x