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