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