Your goal is to find the secret four-color code. The following colors are possible: pink, blue, brown, white, black, green.
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', 'blue', 'white', 'pink']. Hint: two colors are in the secret code but in the wrong positions.
Guess: ['pink', 'brown', 'blue', 'brown']. Hint: two colors are in the correct positions.
Guess: ['pink', 'brown', 'black', 'green']. 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
white, white, white, pink blue, white, black, pink pink, black, green, brown white, pink, green, pink