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