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