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