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