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