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