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