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