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