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