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