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