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