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