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