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