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