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