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