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