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