√sPf
present: [6.] sPur/ati etc. V.+ sPur/ate etc. B.+ [perfect: pusPora pusPure ]aorist: [1.] sPUryAt -- [3.] aspusPurat -- [5.] sParIs asPorIt [future: sPurizyati sPuritA ]verbal: sPurita E.+ sPulita sParitvA secondary: intensive: posPur- -- desiderative: pusPuriza- -- causative: sPArayati etc. E.+ sPurayati sPorayati derivatives: -sPur -sPura V.+ -sPAra E.+ sPuraRa S.+ -sPUrti C. -sPul/iNga V.+ Does not seem worth the attempt to divide into different roots, as the who.e considerable range of meanings appears in the forms of sPur.