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