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