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