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