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.File;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.util.HashSet;
import java.util.Scanner;


public class B {
	public static void main(String ... args) throws Exception{
		Scanner in = new Scanner(new File("C-large.in"));
		PrintStream out = new PrintStream(new File("C-large.out"));
		
		
		int T = in.nextInt();
		in.nextLine();
		
		for(int t=0;t<T;t++){
			int A = in.nextInt();
			int B = in.nextInt();
			HashSet<String> set = new HashSet<String>();
			int found=0;
			for(int n=A;n<=B;n++){
				int high=(int)Math.log10(B);
				String orgNumber = new Integer(n).toString();
				do{
					String num = orgNumber;
					for(int i=0;i<num.length();i++){
						num = num.substring(num.length()-1) + num.substring(0,num.length()-1);
						int intNum = Integer.parseInt(num);
						if(intNum>n && intNum<=B && !set.contains(n+" "+intNum)){
							//System.out.println(n + " " + intNum);
							found++;
							set.add(n+" "+intNum);
						}
						
					}
					
					orgNumber = "0" + orgNumber;
				}while(orgNumber.length()<=high);
				
			}
			out.println("Case #" + (t+1) + ": " + found);
		}
		
		
	}
}
