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