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