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