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