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