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