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