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