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