import java.util.*;
import java.io.*;

class Solution{
    public static void main(String []argh){
        Scanner in = new Scanner(System.in);
        int t=in.nextInt();
        int sum;
        int sum2;
        int p;
        for(int i=0;i<t;i++){
            int a = in.nextInt();
            int b = in.nextInt();
            int n = in.nextInt();
            sum = a + b;
            sum2 = 0;
            System.out.print(sum);
                for(p=1;p<n;p++){
                    sum2 = sum+(((int)Math.pow(2,p))*b);
                    sum = sum2;
                    System.out.print(" " + sum2);
                }
            if (t>1){
                System.out.println();
            }
        }
        in.close();
    }
}