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.io.*;
import java.math.*;
import java.util.*;
import java.text.*;
import java.util.regex.*;

import static java.lang.Math.*;
import static java.util.Arrays.*;
import static java.util.Collections.*;
import static java.lang.Integer.*;
import static java.lang.Double.*;
import static java.lang.Character.*;


public class C {
	
	static class Pair {
		int a, b;

		public Pair(int a, int b) {
			super();
			this.a = a;
			this.b = b;
		}

		@Override
		public int hashCode() {
			final int prime = 31;
			int result = 1;
			result = prime * result + a;
			result = prime * result + b;
			return result;
		}

		@Override
		public boolean equals(Object obj) {
			if (this == obj)
				return true;
			if (obj == null)
				return false;
			if (getClass() != obj.getClass())
				return false;
			Pair other = (Pair) obj;
			if (a != other.a)
				return false;
			if (b != other.b)
				return false;
			return true;
		}
	}

	Object solve() {
		String As = sc.next();
		int l = As.length();
		int A = parseInt(As);
		int B = sc.nextInt();
	
		int ml = (int)pow(10,l-1);
		HashSet<Pair> used = new HashSet<Pair>();
		
		for (int n = A; n < B; n++) {
			int m = n;
			for (int i = 0; i < l; i++) {
				m = m/10 + (m%10)*ml;
				if (n < m && m <= B)
					used.add(new Pair(n,m));
			}
		}
		
		return used.size();
	}

	private static Scanner sc; private static PrintWriter fw;

	public static void main(String[] args) throws Exception {
		String inFile;
//		inFile = "input.txt";
//		inFile = "C-small-attempt0.in";
		inFile = "C-large.in";
		
//		sc = new Scanner(System.in);
		sc = new Scanner(new FileInputStream(inFile));
		
		fw = new PrintWriter(new FileWriter("output.txt", false));

		
		int N = sc.nextInt();
		sc.nextLine();
		
		for (int cas = 1; cas <= N; cas++) {
			fw.print("Case #" + cas + ": ");
//			fw.println("Case #" + cas + ": ");
			Object res = new C().solve();
			if (res instanceof Double) 
				fw.printf("%.10f\n", res);
			else
				fw.printf("%s\n", res);
			fw.flush();
		}
		fw.close();
		sc.close();
	}

}
