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