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