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