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