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