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