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