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