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