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