@Pandya Wikipedia lists five sets of Pravaras for Shandilya Gotra: "Sandilya (5 Variations)
Kasyapa,Aavatsaara,Naidhruva
Kasyapa,Aavatsaara,Sandilya
Kasyapa, Daivala, Asitha
Kasyapa,Aavatsaara,Nidhruva,Rebha,Ribhya,Shandila,Sandilya
Kasyapa,Thivala,Asitha,Aavatsara,Thiswatha,Reparesha,Sandilya"