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