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