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