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