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