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