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