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