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