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