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