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