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