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