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