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