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