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