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