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