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