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