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