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