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