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