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