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