It does not move to the next row without a green leg in each row. A different combination comes when done wrong or when the game is over.
Part 1: There are 2 green and 1 red in each row. Chances are high, that is 66 percent. He has the right to make a maximum of 2 mistakes.
2.Chapter: 2 reds and 2 greens and your half chance is 50 percent. Up to 3 wrongs.
Chapter 3: You have 3 reds and 2 greens and you need a lot of luck. You are allowed to make a maximum of 4 mistakes.