# Codeblock 7c
    def forward(self, x):
        print(f'original\t\t\t: {x.size()}')
        
        x_stage4, x_stage5 = self.darknet(x)              #(1)
        print(f'\nx_stage4\t\t\t: {x_stage4.size()}')
        print(f'x_stage5\t\t\t: {x_stage5.size()}')
        
        print()
        x = x_stage5
        for i in range(len(self.stage6)):
            x = self.stage6[i](x)                         #(2)
            print(f'x_stage5 after stage6 #{i}\t: {x.size()}')    
        
        x_stage4 = self.passthrough(x_stage4)             #(3)
        print(f'\nx_stage4 after passthrough\t: {x_stage4.size()}')
        
        x_stage4 = self.reorder(x_stage4)                 #(4)
        print(f'x_stage4 after reorder\t\t: {x_stage4.size()}')
        
        x = torch.cat([x_stage4, x], dim=1)               #(5)
        print(f'\nx after concatenate\t\t: {x.size()}')
        
        for i in range(len(self.stage7)):                 #(6)
            x = self.stage7[i](x)
            print(f'x after stage7 #{i}\t: {x.size()}')    
        
        return x