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