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