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