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