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