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