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