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