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