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