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