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