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