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