import java.util.Scanner;
import java.io.*;
import java.lang.Math;


public class C{
	public static int recycle(String str){
		String[] numbers = str.split(" ");
		int min = Integer.parseInt(numbers[0]);
		int max = Integer.parseInt(numbers[1]);
		int ret = 0;

		for(int i = min; i < max; i++){
			String num = i + "";
			int len = num.length();
			int k = i;
			for(int j = 1; j < len; j++){
				k = (k/10) + (int)java.lang.Math.pow(10.0,(double)(len-1))*(k%10);
				if (k > i && k <= max)
					ret++;
				else if(k == i)
					break;
			}
		}

		return ret;
	}

	public static void main(String[] args){
		Scanner sc = null;
		String next;
		int out;
		try{
			sc = new Scanner(new File("C-large.in"));
			int cases = Integer.parseInt(sc.nextLine());
			int current = 0;
			

			FileWriter fs = new FileWriter("output.txt");
			BufferedWriter buff = new BufferedWriter(fs);
			while(current < cases){
				next = sc.nextLine();
				current++;
				out = recycle(next);
				buff.write("Case #" + current + ": " + out + "\n");
			}
			buff.close();
		}
		catch(Exception ex){}
	}
}
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.Scanner;
public class C {
	public static void main(String[] args) throws Exception{
		Scanner sc = new Scanner(new File("C.in"));
		long tt = System.currentTimeMillis();
		PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("C.out")));
		HashSet<String> HS = new HashSet<String>();
		LinkedList<obj> LL = new LinkedList<obj>();
		int N = 1;
		
		for(int i=1;i<=N;i++){
			
			int A = 1;
			int B = 2000000;
			for(int a=A;a<=B;a++){
				String x = a+"";
				for(int b=1;b<x.length();b++){
					String temp = x.substring(b)+x.substring(0,b);
					if(temp.charAt(0)=='0')continue;
					int other = Integer.parseInt(temp);
					if(other>a&&other>=A&&other<=B){
						if(HS.contains(x+" "+temp))continue;
						HS.add(x+" "+temp);
						LL.add(new obj(a,other));
					}
				}
			}
		}
		//System.out.println(HS.size());
		N = sc.nextInt();
		for(int i=1;i<=N;i++){
			int A = sc.nextInt();
			int B = sc.nextInt();
			int total = 0;
			for(obj x : LL){
				
				int T1 = x.x;
				int T2 = x.y;
				if(A<=T1&&T1<=B&&A<=T2&&T2<=B){
					total++;
				}
				//System.out.println(total);
			}
			out.println("Case #"+i+": "+total);
			//System.out.println("Case #"+i+": "+total);
		}
		out.close();
		//System.out.println(System.currentTimeMillis()-tt);
	}
	static class obj{
		int x; 
		int y;
		obj(int a, int b){
			x=a;
			y=b;
		}
	}
}
