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