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