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