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