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