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