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