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