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