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