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