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