# Codeblock 7b
    def forward(self, x):
        print(f'original\t\t: {x.size()}')
        
        x = self.relu(self.resnext_bn1(self.resnext_conv1(x)))
        print(f'after resnext_conv1\t: {x.size()}')
        
        x = self.resnext_maxpool1(x)
        print(f'after resnext_maxpool1\t: {x.size()}')
        
        for i, block in enumerate(self.resnext_conv2):
            x = block(x)
            print(f'after resnext_conv2 #{i}\t: {x.size()}')
            
        for i, block in enumerate(self.resnext_conv3):
            x = block(x)
            print(f'after resnext_conv3 #{i}\t: {x.size()}')
            
        for i, block in enumerate(self.resnext_conv4):
            x = block(x)
            print(f'after resnext_conv4 #{i}\t: {x.size()}')
            
        for i, block in enumerate(self.resnext_conv5):
            x = block(x)
            print(f'after resnext_conv5 #{i}\t: {x.size()}')
        
        x = self.avgpool(x)
        print(f'after avgpool\t\t: {x.size()}')
        
        x = torch.flatten(x, start_dim=1)
        print(f'after flatten\t\t: {x.size()}')
        
        x = self.fc(x)
        print(f'after fc\t\t: {x.size()}')
        
        return x