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