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