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