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