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