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