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