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