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