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