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