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