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