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