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