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