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