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