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