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