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