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