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