Your goal is to find the secret four-color code. The following colors are possible: green, purple, yellow, brown, red, white.
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: ['white', 'red', 'brown', 'purple']. Hint: two colors are in the secret code but in the wrong positions.
Guess: ['green', 'green', 'red', 'white']. Hint: two colors are in the secret code but in the wrong positions.
Guess: ['red', 'white', 'purple', 'yellow']. Hint: two colors are in the correct positions and one color is in the secret code but in the wrong positions.
Guess: ['yellow', 'white', 'purple', 'green']. Hint: two colors are in the correct positions and one color is in the secret code but in the wrong positions.
A B C D
red, yellow, purple, green purple, red, yellow, green red, red, green, purple white, white, red, yellow