import java.io.*;
import java.math.BigInteger;
import java.util.*;

import org.jfree.data.function.PowerFunction2D;

public class r2a
{

	Map numMap = new HashMap();
    int output = 0;

    /**
     * @param args
     */
    public static void main(String[] args)
    {
        r2a mk = new r2a();
        try {
            FileInputStream fstream = new FileInputStream("d:/cjinput.txt");
            DataInputStream in = new DataInputStream(fstream);
            BufferedReader br = new BufferedReader(new InputStreamReader(in));
            String str;
            int i = 0;
            while ((str = br.readLine()) != null) {
            	int begin=0,end = 0;
                i++;
                if (i == 1)
                    continue;
                mk.numMap = new HashMap();
                StringTokenizer strTok = new StringTokenizer(str, " ");
                while (strTok.hasMoreTokens()) {
                	begin =  Integer.parseInt(((String) strTok.nextToken()));
                    end = Integer.parseInt(((String) strTok.nextToken()));
                }

                mk.evaluate(i, begin, end);

            }
            in.close();
        }
        catch (Exception e) {
            System.err.println(e);
        }

    }

    private void evaluate(int rowNum, int begin, int end)
    {
    	output=0;
    	for (int i = begin; i<= end; i++) {
    		if(numMap.containsKey(Integer.valueOf(i)))
    			continue;
    		List l = getPairElems(i);
    		if (l.size() > 0) {
    			Iterator itr = l.iterator();
    			int ctr = 0;
    			ArrayList tempList = new ArrayList();
    			while (itr.hasNext()) {
    				int next = ((Integer)itr.next()).intValue();
    				if (next <= end && next > i) {
    					numMap.put(Integer.valueOf(next), i);
    					tempList.add(next);
    					ctr++;
    				}
    			}
    			ctr = getCounter(ctr+1,2);
/*    			if (tempList.size() > 0 || ctr > 0)
    				System.out.println("DD: " + i + ": " + tempList +" ; ctr = " + ctr);*/
    			output = output + ctr;
    		}
    		
    	}

        String outputStr = "Case #" + (rowNum -1) + ": " + output;
        
        System.out.println(outputStr);
    }

	private int getCounter(int n, int r) {
		int ret = 1;
		int nfactorial =1;
		for (int i = 2; i<=n; i++) {
			nfactorial = i*nfactorial;
		}
		int nrfact =1;
		for (int i = 2; i<=n-r; i++) {
			nrfact = i*nrfact;
		}
		
		return nfactorial/(2*nrfact);
	}

	private ArrayList getPairElems(int num) {
		ArrayList retList = new ArrayList();
		int temp = num;
		if (num/10 == 0)
			return retList;
		
		String str = String.valueOf(num);
		
		int arr[] = new int[str.length()];
		int x = str.length();
		while (temp/10 > 0) {
			arr[x-1] = temp%10;
			temp=temp/10;
			x--;
		}
		arr[0]=temp;
		
		int size = arr.length;
		for (int pos = size -1; pos >0; pos--) {
			if(arr[pos] == 0)
				continue;
			int pairNum = 0;
			int multiplier =1;
			for (int c=0; c < size-1; c++) {
				multiplier = multiplier*10;
			}
			pairNum = pairNum + (arr[pos]*multiplier);
			for(int ctr = pos+1, i=1; i < size; i++,ctr++) {
				if (ctr == size)
					ctr=0;
				if (multiplier!=1)
					multiplier=multiplier/10;
				pairNum = pairNum + (arr[ctr]*multiplier);
			}
			if (pairNum != num)
				retList.add(Integer.valueOf(pairNum));			
		}
		
		return retList;
	}
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package recycle.number;

import dancing.gogglers.Googlers;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;

/**
 *
 * @author Raveesh
 */
public class Recycler {
    
    public static void main(String[] args) throws FileNotFoundException, IOException {
        String filePath = "C:\\Users\\Raveesh\\Downloads\\C-large.in";
        String filePathOutput = filePath + "_out";
        BufferedReader stdin = new BufferedReader(new FileReader(new File(filePath)));
        FileWriter fileWriter = new FileWriter(filePathOutput);
        ArrayList stringList = Recycler.getInputList(stdin);
        int count = 1;
        Iterator iter = stringList.iterator();
        while (iter.hasNext()) {
            String inputStr = (String) iter.next();
            String[] inputStrArr = inputStr.split("\\ ");
            int startNum  = Integer.valueOf(inputStrArr[0]);
            int endNum  = Integer.valueOf(inputStrArr[1]);
            int output = Recycler.performPerm(startNum,endNum);
            String out = "Case #" + count + ": " + output;
            fileWriter.write(out);
            fileWriter.write("\n");
            count++;
        }       
        fileWriter.close();

    }
    
    private static int performPerm(int start,int end ) {
        finalSet = new ArrayList();
        inputSet = new HashSet();
        for (int i=start;i<=end;i++) {
//            System.out.println("Running" + i);
            StringBuffer val = new StringBuffer(String.valueOf(i));
//            System.out.println("Running" + val);
            checkVal(start, end, val);
        }
        
//        Iterator iter = finalSet.iterator();
//        while (iter.hasNext()) {
//            System.out.println("Val " + iter.ne);
//        } 
//        System.out.println("=========================COUNT " + finalSet.size()/2);
        return finalSet.size()/2;
        
        
    }
    
    private static ArrayList finalSet = new ArrayList();
    private static HashSet inputSet = new HashSet();
    private static boolean checkVal (int start,int end, StringBuffer val) {
        
        
        for (int i =0;i< val.length() ; i++) {
            String temp = val.substring(0,i+1);
            String rem = val.substring(i+1,val.length());
            String val1 = rem + temp;
//            System.out.println("temp" + temp + " rem : " + rem);
//            for (int j = 0;j <= rem.length() ; j++) {
//                StringBuffer val1 = new StringBuffer(rem);
                
                
//                if (j==i) {
//                    continue;
//                    
//                }
//                val1.insert(j, temp);
//                System.out.println("iNPUT :; " + val + " :: Output : " + val1);
//                System.out.println("iNPUT :; " + val + " :: Output : " + val1);
                int t = Integer.valueOf(val1.toString());
                if (t >= start && t <= end && !val.toString().equals(val1.toString())) {
//                    System.out.println("iNPUT :; " + val + " :: Output : " + val1 + " t :: " + t );
                    if (inputSet.add(val + "," + val1)) {
                        finalSet.add(t);
                    }
////                    System.out.println("dding :: " + t);
//                    String key = val.toString() + ","  + val1.toString();
//                    String key1 = val1.toString() + "," + val.toString();
//                    if(!(finalSet.containsKey(key)|| finalSet.containsKey(key1))) {
                        
//                        finalSet.put(key, t);
//                    }
////                    finalSet.put(Integer.valueOf(val1.toString()));
//                }
//                System.out.println("num :: " + val1);
            }
        }
        return true;
    }
    
    
    private static ArrayList getInputList(BufferedReader stdin) throws IOException {
        ArrayList stringList = new ArrayList<String>();
        String line;
        int inputLineCount = 0;
        Integer testCaseCount = 0;
        while ((line = stdin.readLine()) != null && line.length() != 0 && inputLineCount <= testCaseCount.intValue()) {
//            System.out.println("line ::  " + line);
            if (inputLineCount == 0) {
                try {
                    testCaseCount = Integer.valueOf(line);
                } catch (NumberFormatException pe) {
                    System.out.println("Invalid input for # of test cases");
                    System.exit(0);
                }
                inputLineCount++;
                continue;
            }
            stringList.add(line);
            inputLineCount++;

            if (inputLineCount == testCaseCount + 1) {
                break;
            }

        }
        return stringList;
    }
    
}
