Table:
text: 1998–99 European Challenge Cup
Pool 1
Pool 1
Team Tries_for Tries_against Try_diff Points_for Points_against Points_diff
Narbonne 32 13 +19 228 98 +130
Caerphilly 16 19 −3 167 154 +13
Périgueux 23 13 +10 168 119 +49
Racing Club de France 17 23 −6 127 184 −57
Connacht 16 19 −3 129 156 −27
Newport 14 23 −9 123 183 −60
Rugby Rovigo 12 20 −8 108 156 −48

Question: Among the 1998–99 European Challenge Cup Pool 1 who has tries against has points against more than 156 and points for 127 and tries for more than 17?

Question: Which try-diff has tries for 12 for 1998-99 European Challenge Cup Pool 1?