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