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