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