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