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