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