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