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