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