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