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