N = 11
[C1] non-units [C2] #non-units lead to same
#solution for discriminant
[C3] #solution for discriminant
= non-units in C1
0 1 11
C2TC3 = #ways delta can be non-unit 11
Total non-singular EC over Z11 = 112 - #ways delta can be non-unit (C2TC3) = 110