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