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