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