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