The affix ṅīp come in the feminine after a prātipadika (Nominal Stem) ending in a , which is dvigu samāsa (Numeral Determinative Compound). ,
Thus दशपूली, पञ्चपूली ॥ But we find त्रिफला 'the three myrobalans', because this is one of the words spoken of as 'अज &c' 4.1.4.,