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