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