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