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