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