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