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