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