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