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