// These are not counted as duplicates:

using System;
using System;
using System;
using System;
using System;
using System;
using System;
using System;
using System;

class C3
{
    void f()
    {
        int a;
        int b;
        int c;
        int d;
        int e;
        int f;
        int g;
        int h;
        int i;
        int j;
        int k;
    }
}