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