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