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