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