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