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