You also need to learn your stagger timing so that you can beat people holding up-back in the middle of your blockstrings. This can be troublesome as the timing changes depending on the move you're coming out of, the move you're going into, and the spacing. Ffor example, far (but not max) range 2B to 2C has to be done instantly, whereas close 5B to 2A can work as a string reset if your timing is perfect.