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