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