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