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