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