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