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