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