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