√rA1 'give'
present: [3.] rirIhi rarAsva rarIDvam etc. r/arate r/arARa -- [2.] r/Asi rAti rAt/e r/Asva -- [1.] r/Asate etc.
perfect: rarim/a rariv/ANs rar/e etc.
aorist: [4.] /arAsma etc. r/Asat etc. rAsATAm rAsIya
future: [1.] rAsyati -- [2.] rAtA
verbal: rAt/a V.+ rAtave
derivatives: -rA r/E r/A? V.+ -rAya V. ray/i? V.+ rayizWa B. r/atna? V.+ rAk/A V.+ rAt/i V.+ r/Avan V.B. r/arAvan RV. -r/aru? V.B.
The present-stem rAsa is plainly an extension of the aorist-stem rAs.