import java.util.Scanner;

class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int t=sc.nextInt();
		int casos=1, a, b, n, m, cont;
		while(t!=0){
			a=sc.nextInt();
			b=sc.nextInt();
			if(a>b){
				int aux=a;
				a=b;
				b=aux;
			}
			System.out.printf("Case #%d: ",casos++);
			if(a==b){
				System.out.printf("%d\n",0);
			}else{
				cont=0;
				for(n=a;n<b;n++){					
					for(m=n+1;m<=b;m++){					
						if(isRecycled(n,m)) cont++;
					}
				}
				System.out.printf("%d\n",cont);
			}
			t--;
		}		
	}
	public static boolean isRecycled(int n1, int n2){
		String s1, s2, aux;
		s1 =  String.valueOf( n1 );
		s2 =  String.valueOf( n2 );		
		boolean r = false;		
		for(int i=0;i<s1.length();i++){
			aux="";
			aux=s1.substring(i,s1.length())+s1.substring(0,i);
//			System.out.println(aux);
			if(aux.equals(s2)){
				r=true;
				break;
			}
		}		
		return r;
	}
}

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-small-attempt0.in"));
		PrintStream out = new PrintStream(new File("C-small-attempt0.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);
		}
		
		
	}
}
