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