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