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.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;


public class C {
public static void main(String args[]){
		
		try{
		
			BufferedReader br = new BufferedReader(new FileReader(args[0]));
			String strTmp = br.readLine();
			BufferedWriter bw = new BufferedWriter(new FileWriter( new File("output.txt"),false));
			
			
			int inputSize = Integer.parseInt(strTmp);
			
			
			for(int i=0;i<inputSize;i++  ){

				String[] line = br.readLine().split(" ");
				int pos = 0;
				// processing inputline
				
				int len = line[0].length();
				int min = Integer.parseInt(line[0]);
				int max = Integer.parseInt(line[1]);
				
				if(min<10){
					pos = 0;
				}else{
					
					for(int j=min ; j <= max ; j++ ){
				
						String st = Integer.toString(j);
						ArrayList<Integer> uniqList = new ArrayList<Integer>();
						for(int k=0;k<len-1;k++){
							char tmp = st.charAt(len-1);
							st = st.charAt(len-1) + st.substring(0,len-1);
							
							int i1 = Integer.parseInt(st);
							
							if(j<i1 && i1<=max && !uniqList.contains(i1) ){
								pos++;
								uniqList.add(i1);
							}
							
						}
					}
				}
				// produce output
                //System.out.println("Case #"+(i+1)+": " + pos );			
				bw.write("Case #"+(i+1)+": " + pos );
				bw.newLine();
			}
			
			bw.close();
			br.close();
		
		
		}catch(Exception ex){
			ex.printStackTrace();
		}
	}
}
