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