# Codeblock 7b
    def forward(self, x):
        print(f'original\t\t: {x.size()}')
        
        x = self.norm1(self.relu(self.conv1(x)))
        print(f'after conv1\t\t: {x.size()}')
        x = self.pool1(x)
        print(f'after pool1\t\t: {x.size()}')
        
        x = self.norm2(self.relu(self.conv2(x)))
        print(f'after conv2\t\t: {x.size()}')
        x = self.pool2(x)
        print(f'after pool2\t\t: {x.size()}')
        
        x = self.relu(self.conv3(x))
        print(f'after conv3\t\t: {x.size()}')
        
        x = self.relu(self.conv4(x))
        print(f'after conv4\t\t: {x.size()}')
        
        x = self.relu(self.conv5(x))
        print(f'after conv5\t\t: {x.size()}\n')
        
        x = self.spp(x)
        print(f'after spp\t\t: {x.size()}\n')
        
        x = self.dropout6(self.relu(self.fc6(x)))
        print(f'after fc6\t\t: {x.size()}')
        
        x = self.dropout7(self.relu(self.fc7(x)))
        print(f'after fc7\t\t: {x.size()}')
        
        x = self.fc8(x)
        print(f'after fc8\t\t: {x.size()}')
        
        return x