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