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: ['red', 'brown', 'white', 'blue']. Hint: two colors are in the correct positions and one color is in the secret code but in the wrong positions.
Guess: ['green', 'blue', 'brown', 'blue']. Hint: one color is in the secret code but in the wrong position.
Guess: ['green', 'brown', 'black', 'white']. Hint: three colors are in the secret code but in the wrong positions.
A B C D
white, red, blue, blue white, white, white, black red, black, white, brown green, blue, red, brown