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