Random Marble Table

If all that you have is a bag full of marbles in three colours, all random tables start to look like this:

1. red, red, red
2. green, green, green
3. blue, blue, blue
4. red, red, green
5. red, red, blue
6. green, green, red
7. green, green, blue
8. blue, blue, red
9. blue, blue, green
10. red, green, blue