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