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