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