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