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