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