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