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