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.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.Vector;


public class problemC {

	Vector<String> lines = new Vector<String>();
	
	public static void main(String[] arg) {
		problemC pc = new problemC();
		
		pc.lines = pc.readfile("C:\\eclipse\\Ashish\\files\\C-large.in");
		int nooftestcases = Integer.parseInt(pc.lines.elementAt(0));
		System.out.println(nooftestcases);
		Vector<String> outlines = new Vector<String>();
		//int j=1;
		for (int i=1; i<=nooftestcases; i++) {
			String[] s = pc.lines.elementAt(i).split(" ");
			//int a = Integer.parseInt(s[0]);
			//int b = Integer.parseInt(s[1]);
			int k = pc.solveit(s[0], s[1]);
			String ol = "Case #" + i + ": " + k;
			outlines.add(ol);
			System.out.println(s[0] + " " + s[1] + ":" + k);
		}
		pc.writefile("C:\\eclipse\\Ashish\\files\\otestc.txt", outlines);
		
	}
	
	public int solveit(String fa, String fb) {
		int howmany =0;
		int len = fa.length();
		
		int ia=Integer.parseInt(fa);
		int ib=Integer.parseInt(fb);
			
		for (int cand=ia; cand<=ib; cand++) {
			String a = String.valueOf(cand);
			Vector<String> ms = new Vector<String>();
			
			//System.out.println(a);
			String fno = a.substring(0, 1);
			//System.out.println(fno);
			int ifno = Integer.parseInt(fno);
			for (int i=1; i<len; i++) {
				String sno = a.substring(i, i+1);
				int isno = Integer.parseInt(sno);
				if (isno>ifno && isno !=0) {
					
					String rno = a.substring(i);
					String afno = a.substring(0, i);
					String nno = rno + afno;
					int inno = Integer.parseInt(nno);
					
					if (inno>cand && inno <= ib && ms.indexOf(nno) == -1) {
						ms.add(nno);
						howmany++;
						//System.out.println(" :" + nno);
					} else {
						//System.out.println("Rejected :" + nno);
					}
				} else if (isno==ifno && isno !=0) {
					String rno = a.substring(i);
					String afno = a.substring(0, i);
					String nno = rno + afno;
					int inno = Integer.parseInt(nno);
					if (inno>cand && inno <= ib && ms.indexOf(nno) == -1) {
						ms.add(nno);
						howmany++;
						String srno = a.substring(i);
						String safno = a.substring(0, i);
						String snno = rno + afno;
						//System.out.println(" :" + snno);						
					}
					
				}
				
			}
		}
		
		return howmany;
	}
	
	public void writefile(String name, Vector<String> l) {
		try{
			   // Create file 
			   FileWriter fstream = new FileWriter(name);
			   BufferedWriter out = new BufferedWriter(fstream);
			   for (int i=0; i<l.size(); i++) {
				   out.write((l.elementAt(i) + System.getProperty("line.separator")));
			   }
			   //Close the output stream
			   out.close();
			   }catch (Exception e){//Catch exception if any
			   System.err.println("Error: " + e.getMessage());
		  }
	
	}
	
	public  Vector<String> readfile(String fp) {
		Vector<String> lines = new Vector<String>();
		try {
			FileReader fr = new FileReader(fp); 
			BufferedReader br = new BufferedReader(fr); 
			String s; 
			while((s = br.readLine()) != null) { 
				//System.out.println(s); 
				lines.addElement(s);
			} 
			fr.close(); 
			
		}
		catch (Exception e) {
			System.out.println(e);
		}
		return lines;
	} 
	
}
