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