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