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