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