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