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