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