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