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