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