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