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