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