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