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