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