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