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