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