#include<iostream>
using namespace std;
double x[4];
double y[4];
double z[4];
int main()
{
    int T; cin >> T;
    int cases = 1;
    while(T--) {
        for(int i = 0 ; i < 4 ; i++)
            cin >> x[i] >> y[i] >> z[i];
        int sign = 0;
        if((x[0] + x[1])/2 == (x[2] + x[3])/2 && (y[0] + y[1])/2 == (y[2] + y[3])/2 && (z[0] + z[1])/2 == (z[2] + z[3])/2) {
            if((x[0] - x[1]) * (x[2] - x[3]) + (y[0] - y[1]) * (y[2] - y[3]) + (z[0] - z[1]) * (z[2] - z[3]) == 0)
                if((x[0] - x[1]) * (x[0] - x[1]) + (y[0] - y[1]) * (y[0] - y[1]) + (z[0] - z[1]) * (z[0] - z[1]) ==
                   (x[2] - x[3]) * (x[2] - x[3]) + (y[2] - y[3]) * (y[2] - y[3]) + (z[2] - z[3]) * (z[2] - z[3]))
                    sign = 1;
        }
        if((x[0] + x[2])/2 == (x[1] + x[3])/2 && (y[0] + y[2])/2 == (y[1] + y[3])/2 && (z[0] + z[2])/2 == (z[1] + z[3])/2) {
            if((x[0] - x[2]) * (x[1] - x[3]) + (y[0] - y[2]) * (y[1] - y[3]) + (z[0] - z[2]) * (z[1] - z[3]) == 0)
                if((x[0] - x[2]) * (x[0] - x[2]) + (y[0] - y[2]) * (y[0] - y[2]) + (z[0] - z[2]) * (z[0] - z[2]) ==
                   (x[1] - x[3]) * (x[1] - x[3]) + (y[1] - y[3]) * (y[1] - y[3]) + (z[1] - z[3]) * (z[1] - z[3]))
                    sign = 1;
        }
        if((x[0] + x[3])/2 == (x[1] + x[2])/2 && (y[0] + y[3])/2 == (y[1] + y[2])/2 && (z[0] + z[3])/2 == (z[1] + z[2])/2) {
            if((x[0] - x[3]) * (x[1] - x[2]) + (y[0] - y[3]) * (y[1] - y[2]) + (z[0] - z[3]) * (z[1] - z[2]) == 0)
                if((x[0] - x[3]) * (x[0] - x[3]) + (y[0] - y[3]) * (y[0] - y[3]) + (z[0] - z[3]) * (z[0] - z[3]) ==
                   (x[2] - x[1]) * (x[2] - x[1]) + (y[2] - y[1]) * (y[2] - y[1]) + (z[2] - z[1]) * (z[2] - z[1]))
                    sign = 1;
        }
        if(sign) cout << "Case #" << cases++ << ": Yes" << endl;
        else cout << "Case #" << cases++ << ": No" <<endl;
    }
    return 0;
}