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