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