Generate a list of 10 countries whose flags contain the color red.
1. Japan 
2. China 
3. United States 
4. Indonesia 
5. Vietnam 
6. Canada 
7. France
8. Italy 
9. Switzerland
10. South Korea.
Complete the following task based on the instruction and optional input provided.### Instruction:
Generate a list of 10 countries whose flags contain the color red.

### Output:
1. Japan 
2. China 
3. United States 
4. Indonesia 
5. Vietnam 
6. Canada 
7. France
8. Italy 
9. Switzerland
10. South Korea.