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