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