√prI 'please'
PRes. [9.] prIR/Ati -RIt/e etc. V.+ - [4. (or pass.)] prIyate etc. U.+, -ti etc. E.+ (priyanti R1.)perfect: pipriy/e pipriyAR/a apipres etc. pipr/ayat etc. pipr/ayasva piprIh/i aorist: -- [4.] aprEzIt etc. pr/ezat aprezwa [future: prezyati prezyate pretA ]verbal: prIt/a V.+ prItv/A secondary: intensive: peprI- -- desiderative: p/iprIzati -- causative: prIRayati etc. S.+ derivatives: -prI priy/a V.+ pr/ayas V.B. prIti S.+ pret/f RV.S. preR/i V. prem/an V.+ pr/eyas V.+ pr/ezWa V.+ piprIzA E.+ piprIzu E.+ prIRana E.+ prIRayitf C. The so-called causative is, of course, a denominative, apparently of a pple prIRa, not occurring independently.