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