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