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