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