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