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