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