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