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