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