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