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