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 * and open the template in the editor.
 */
package gcj;

import java.io.File;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Scanner;

/**
 *
 * @author daniele
 */
public class GCJ_C {
    
    public static void main(String[] args) throws Exception{
        
        
        
        Scanner in = new Scanner(new File(args[0]));
        FileWriter out = new FileWriter("/home/daniele/Scrivania/Output");
        

        int prove=in.nextInt();
        int min,max;
        int cifre;
        int cifreaus;
        String temp;
        int aus;
        int count=0;
        ArrayList<Integer> vals = new ArrayList<Integer>();
        int jcount=0;
        ArrayList<Integer> perm = new ArrayList<Integer>();
        
        out.write("");
        out.flush();
        
        for(int i=1;i<=prove;i++){
            
            out.append("Case #" +i+": ");out.flush();
            
            min=in.nextInt();
            max=in.nextInt();
            
            for(int j=min;j<=max;j++){
               if(!vals.contains(j)){
                    temp=""+j;
                    cifre=temp.length();
                    aus=j;
                    perm.add(j);
                    for(int k=1;k<cifre;k++){
                        aus=rotateOnce(aus);
                        temp=""+aus;
                        cifreaus=temp.length();//elusione zeri iniziali
                        if(aus>=min && aus<=max && aus!=j && cifreaus==cifre && nobody(vals,perm)){ 
                            perm.add(aus);
                            jcount ++;
                            
                        }
                        
                    }
                    while(jcount>0){count+=jcount; jcount--;}
                    vals.addAll(perm);
                    perm= new ArrayList<Integer>();
                    
                }
            }
            out.append(count+"\n");out.flush();
            count=0;
            vals= new ArrayList<Integer>();
        }
        
        
        
    }
        static public int rotateOnce(int n){
            String s=""+n;
            if(s.length()>1){
                s=s.charAt(s.length()-1) + s.substring(0,s.length()-1);
                n=Integer.parseInt(s);
            }
            return n;
        }    
        
        static public boolean nobody(ArrayList<Integer> v,ArrayList<Integer> a){;
            for(int i=0;i<a.size();i++)
                if(v.contains(a.get(i))) return false;
            return true;
        } 
    
}


import java.io.BufferedReader;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintStream;
import java.util.Arrays;
import java.util.StringTokenizer;


public class Code3 {


	
	private BufferedReader reader = null;
	PrintStream out = null;
	
	public static void main(String[] args) throws Exception {
		String file = "C-small-attempt0";
		Code3 code2 = new Code3();
		try {
	    code2.reader = new BufferedReader(new FileReader("source/" + file + ".in"));
		code2.out = new PrintStream(new FileOutputStream("source/" + file + ".out"));
		code2.runCases();
		} finally {
			code2.reader.close();
			code2.out.close();
		}
	}
	
	private void runCases() throws IOException {
		int cases = getInt();
		for (int c = 1; c <= cases; c++) {
			out.print("Case #" + c + ": ");
			execute();
			out.print("\n");
		}
	}
	
	private String readNext() throws IOException {
		String s = reader.readLine();
		return s;
	}
	
	private int getInt() throws IOException{
		String s= this.readNext();
		return Integer.valueOf(s);
	}
	
	private void execute() throws IOException {
		String s = this.readNext();		
		Code3DataStructure ds = new Code3DataStructure();
		StringTokenizer st = new StringTokenizer(s," ");
			ds.setA(Integer.parseInt(st.nextToken()));
			ds.setB(Integer.parseInt(st.nextToken()));
			System.out.println("=========================");
			this.processData(ds);
			System.out.println("=========================");
		out.print(ds.getResult());
		
	}
	
	private void processData(Code3DataStructure ds) {
		if(ds.getA()==ds.getB()) {
			ds.setResult(0);
			return;
		}
		int recyclePairCount = 0;
		for (int i = ds.getA(); i < ds.getB(); i++) {
			for (int j = i+1; j < ds.getB(); j++) {
				if(isRecyclePair(i, j)) {
					recyclePairCount++;
				}
			}
		}
		ds.setResult(recyclePairCount);
	}
	
	private boolean isRecyclePair(int m, int n) {
		boolean recyclePair = false;
		if((m+"").length() == (n+"").length()) {
			int length = (m+"").length();
			for (int i = 1; i <= length; i++) {
				int rotatedValue = rotateNumber(m, i);
				if(rotatedValue == n) {
					return true;
				}
			}
		}
		return recyclePair;
	}
	
	private static int denomination(int baseDenomination, int amount) {
		int denomination = 1;
		for (int i = 0; i < amount; i++) {
			denomination*=baseDenomination;
		}
		return denomination;
	}
	private static int rotateNumber(int m,int chunkSize) {
		int chunk = m%(denomination(10,chunkSize));
		int leftover = m/(denomination(10,chunkSize));
		int leftoverSize = (leftover+"").length();
		int output = chunk*(denomination(10,leftoverSize))+leftover;
		return output;
	}
	
	
}
