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