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