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