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