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