I need clarity in 7 qiraat of the Quran. According to the hadeeth of Ibn ‘Abbaas who narrated that the Prophet (peace and blessings of Allaah be upon him) said: “Jibreel taught me one style and I reviewed it until he taught me more, and I kept asking him for more and he gave me more until finally there were seven styles.” (narrated by al-Bukhaari, 3047; Muslim, 819), there are only seven styles, so why do people say there 10 qiraats? What is the difference between "style" and "qira'a"? and I think even the seven qiraat ('Assim, Naafi', Ibn Kathir, etc) each of them has 2 readings (Shu'ab 'an 'Assim, Hafs 'an 'Assim, etc). How can these be explained when the hadith says there are only 7 styles?