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