Ashtadhyayi possesses 4000 formulae in eight chapters, which include 14 Pratyahar formulae too. Each chapter comprises 4 Paadas and there are 32 Paadas in total. Paniniyan Vyakaran is not only Sutrapath but comprises Dhatupath, Ganapath, Linganushasan and Unadipath also in its complete understanding.