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