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