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