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