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