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