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