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