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