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