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