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