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