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