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