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