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