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.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.io.PrintStream;
import java.util.HashSet;
import java.util.Scanner;

//javac C.java && java C x.in x.out
public class C {
	public static void main(String[] args) throws FileNotFoundException {
		InputStream in = System.in;
		if(args.length>0)
			in = new FileInputStream(args[0]);
		PrintStream out = System.out;
		if(args.length>1)
			out = new PrintStream(args[1]);

		Solver s = new Solver(new Scanner(in),out);
		//Multiple case input
		s.cases();
		//Single case input
		//s.go();
	}
}

class Solver {
	Scanner in;
	PrintStream out;
	public Solver(Scanner scanner, PrintStream printStream) {
		in = scanner;
		out = printStream;
	}

	public void cases() {
		int numCases = in.nextInt();
		in.nextLine();
		for(int i=0;i<numCases;i++) {
			out.print("Case #"+(i+1)+": ");
			go();
		}
	}

	public void go() {
		int A = in.nextInt();
		int B = in.nextInt();
		int ans = 0;
		
		int mod = 1;
		int a = A;
		int digs = 0;
		while(a>0) {
			a/=10;
			mod*=10;
			digs++;
		}

		HashSet<Integer> found = new HashSet<Integer>();
		for(int n = A; n <= B; n++) {
			found.clear();
			int nn=n;
			for(int i = 0; i < digs; i++) {
				nn=(nn+mod*(nn%10))/10;
				found.add(nn);
			}
			for(int mm : found)
				if(mm>n&&mm<=B)
					ans++;
		}
		out.println(ans);
	}
}