Your goal is to find the secret four-color code. The following colors are possible: purple, black, blue, yellow, 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: ['green', 'purple', 'yellow', 'white']. Hint: three colors are in the correct positions.
Guess: ['purple', 'purple', 'black', 'blue']. Hint: two colors are in the correct positions.
Guess: ['purple', 'purple', 'purple', '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
green, purple, black, white green, purple, yellow, black green, white, blue, yellow blue, black, blue, blue