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