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