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