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