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