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