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