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