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