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