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