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