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