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