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