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