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