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