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