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