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