√sap 'serve'
present: [1.] s/apati s/apate etc. perfect: sepus aorist: [3.] sIzapanta [future: sapizyati sapitA ]secondary: causative: sAp/ayant? derivatives: -sAp s/apa B.S. -sapin RV. sapar- V.+ s/apti V.+ The relations of part of these forms are very doubtful.