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