import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;


public class GoogleC {
	public String szamol(String input){
		String result="";
		String a=input;
		Integer min=Integer.parseInt(a.substring(0,a.indexOf(' ')));
		a=a.substring(a.indexOf(' ')+1);
		Integer max=Integer.parseInt(a);
		Long count=0l;
		for(Integer i=min; i<=max; i++){
			String e1=i.toString();
			Set<Integer> db=new HashSet<Integer>(); 
			for (int j=1; j<e1.length();j++){
				
				String e2=e1.substring(j)+e1.substring(0,j);
				Integer k=Integer.parseInt(e2);
				if (k>i && k<=max){
					db.add(k);
					//System.out.println(e1+"\t"+e2);
				}
				
			}
			count+=db.size();
		}
		
		return count.toString();
	}
	public static void main(String[] args) {
		GoogleC a=new GoogleC();
		//String filename="input.txt";
		//String filename="C-small-attempt0.in";
		String filename="C-large.in";
		String thisLine;
		try {
			BufferedReader br = new BufferedReader(new FileReader(filename));
			BufferedWriter bw= new BufferedWriter(new FileWriter(filename+".out"));
			thisLine=br.readLine();
			Integer tnum=Integer.parseInt(thisLine);
		     for(int i=0;i<tnum;i++) { // while loop begins here
		    	 	thisLine=br.readLine();
		           System.out.println(thisLine);
		           System.out.println("Case #"+(i+1)+": "+a.szamol(thisLine)+"\n");
		           bw.write("Case #"+(i+1)+": "+a.szamol(thisLine)+"\n");
		         } // end while 
		        // end try
		     br.close();
		     bw.close();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}


	}

}

import java.util.Scanner;
import java.util.TreeSet;


public class C {
	static TreeSet<Integer> s;
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner kb = new Scanner(System.in);
		int t = kb.nextInt();
		int c = 1;
		int cnt, a, b;
		while(t-- > 0)
		{
			cnt = 0;
			a = kb.nextInt();
			b = kb.nextInt();
			for(int i=a; i<b; i++)
			{
				String x = ""+i;
				String tmp = x;
				s = new TreeSet<Integer>();
				for(int r=0; r<x.length()-1; r++)
				{
					tmp = rotate(tmp);
					if(tmp.charAt(0) == '0') continue;
					int xInt = Integer.parseInt(x);
					int tmpInt = Integer.parseInt(tmp);
					if(tmpInt<=b && tmpInt > xInt) 
					{
						if(!s.contains(tmpInt))
						{
							cnt++;
							s.add(tmpInt);
						}
//						System.out.println("("+x+","+tmp+")");
					}
				}
			}
			System.out.println("Case #"+c+++": "+cnt);
//			for(int k=0; k<cnt; k++)
//			{
//				MPair q = ans[k];
//				for(int l = k+1; l<cnt; l++)
//				{
//					MPair w = ans[l];
//					if(q.a == w.a && q.b == w.b) System.out.println("**"+q.a+" "+q.b);
//				}
//			}
		}
	}
	
	private static String rotate(String n)
	{
		String tmp = ""+n.charAt(n.length()-1);
		for(int i=0; i<n.length()-1; i++)
		{
			tmp += (""+n.charAt(i));
		}
		return tmp;
	}
}