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