Your goal is to find the secret four-color code. The following colors are possible: yellow, brown, green, blue, white, purple.
Some guesses have already been made. I will provide feedback for each guess made with which it is possible to unambigiously determine the secret code.

Previous Guesses:
Guess: ['blue', 'purple', 'yellow', 'brown']. Hint: two colors are in the secret code but in the wrong positions.
Guess: ['yellow', 'brown', 'green', 'green']. Hint: three colors are in the correct positions.
Guess: ['yellow', 'yellow', 'brown', 'green']. Hint: one color is in the correct position and two colors are in the secret code but in the wrong position.
A B C D
blue, purple, blue, brown purple, green, brown, brown yellow, brown, green, white yellow, yellow, green, white