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;
	}
}

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;


public class testC {

    public static void main(String args[]){
     
        
        
       int count=0;
       int A=1111;
       int B=2222;
       String str="";
       String a="";
       String b="";
       int n=0;
       int m=0;
       boolean flag=false;
       
       char s[] = ((B)+"").toCharArray();
       char t[];
       int digits = 0;
       List<Integer> list = new ArrayList<Integer>();
       try{
           FileReader fr = new FileReader("2.txt");
           BufferedReader br = new BufferedReader(fr);
           int size = Integer.parseInt(br.readLine());
           for(int loop=0;loop<size;loop++){
        	   count=0;
        	   flag=false;
        	   a="";
        	   b="";
        		 str= br.readLine();
        		 char arraychar[] = str.toCharArray();
        		 for(int mm=0;mm<str.length();mm++){
        			 if(arraychar[mm] == ' '){
        				 flag=true;
        				 continue;
        			 }
        			 if(!flag)
        				 a+=arraychar[mm];
        			 if(flag)
        				 b+=arraychar[mm];
        		 }
        		 A = Integer.parseInt(a);
        		 B = Integer.parseInt(b);
       for(int i=A;i<=B;i++)
       {
           s = ((i)+"").toCharArray();
           digits = s.length;
         
               t = new char[digits];
               for(int k = 0; k <digits; k++)
               {
                   
            	   t = findRecyclingNumber(s,k);
                   
            	   n =  Integer.parseInt(String.valueOf(t));
            	   if(n<=B && n>=A && n>i && !list.contains(n) && i>=A)
                   {
                        count++;
                       // System.out.println(i+" "+n);
                        list.add(n);
                   }
               }
               list.clear();
       }
       System.out.println("Case #"+(loop+1)+": "+count);
       //System.out.println("Case #"+(loop+1)+": "+count+"    For "+A+" "+B);
           }
       br.close();
       fr.close();
   
   }catch(IOException ex){
       ex.printStackTrace();
   }
      
}

	private static char[] findRecyclingNumber(char[] s,int digits) {
		// TODO Auto-generated method stub
		char t[] = new char[s.length];
		
		for(int i=0;i<=digits;i++){
			t[i] = s[s.length-digits-1+i];
		}
		int index=0;
		for(int i=digits+1;i<s.length;i++){
			t[i] = s[index++];
		}
		
		return t;
	}

}
