import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.StringTokenizer;

public class ReadFile {
	public static void main(String[] args) throws Exception {
		String srcFile = "C:" + File.separator + "Documents and Settings"
				+ File.separator + "rohit" + File.separator + "My Documents"
				+ File.separator + "Downloads" + File.separator
				+ "C-small-attempt1.in.txt";
		String destFile = "C:" + File.separator + "Documents and Settings"
				+ File.separator + "rohit" + File.separator + "My Documents"
				+ File.separator + "Downloads" + File.separator
				+ "C-small-attempt0.out";
		File file = new File(srcFile);
		List<String> readData = new ArrayList<String>();
		FileReader fileInputStream = new FileReader(file);
		BufferedReader bufferedReader = new BufferedReader(fileInputStream);
		StringBuilder stringBuilder = new StringBuilder();
		String line = null;
		while ((line = bufferedReader.readLine()) != null) {
			readData.add(line);
		}
		stringBuilder.append(generateOutput(readData));
		File writeFile = new File(destFile);
		if (!writeFile.exists()) {
			writeFile.createNewFile();
		}
		FileWriter fileWriter = new FileWriter(writeFile);
		BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);
		bufferedWriter.write(stringBuilder.toString());
		bufferedWriter.close();
		System.out.println("output" + stringBuilder);
	}

	/**
	 * @param number
	 * @return
	 */
	private static String generateOutput(List<String> number) {
		StringBuilder stringBuilder = new StringBuilder();
		for (int i = 0; i < number.size(); i++) {
			if (i == 0) {
				continue;
			} else {
				String tempString = number.get(i);
				String[] temArr = tempString.split(" ");
				stringBuilder.append("Case #" + i + ": ");
				stringBuilder.append(getRecNumbers(temArr[0], temArr[1]));
				stringBuilder.append("\n");
			}
		}
		if (stringBuilder.length() > 0) {
			stringBuilder.deleteCharAt(stringBuilder.length() - 1);
		}
		return stringBuilder.toString();
	}

	// /* This method accepts method for google code jam */
	// private static String method(String value) {
	// int intValue = Integer.valueOf(value);
	// double givenExpr = 3 + Math.sqrt(5);
	// double num = Math.pow(givenExpr, intValue);
	// String valArr[] = (num + "").split("\\.");
	// int finalVal = Integer.valueOf(valArr[0]) % 1000;
	//
	// return String.format("%1$03d", finalVal);
	//
	// }
	//
	// /* This method accepts method for google code jam */
	// private static String method2(String value) {
	// StringTokenizer st = new StringTokenizer(value, " ");
	// String test[] = value.split(" ");
	// StringBuffer str = new StringBuffer();
	//
	// for (int i = 0; i < test.length; i++) {
	// // test[i]=test[test.length-i-1];
	// str.append(test[test.length - i - 1]);
	// str.append(" ");
	// }
	// str.deleteCharAt(str.length() - 1);
	// String strReversedLine = "";
	//
	// while (st.hasMoreTokens()) {
	// strReversedLine = st.nextToken() + " " + strReversedLine;
	// }
	//
	// return str.toString();
	// }

	private static int getRecNumbers(String no1, String no2) {

		int a = Integer.valueOf(no1);
		int b = Integer.valueOf(no2);
		Set<String> dupC = new HashSet<String>();
		for (int i = a; i <= b; i++) {
			int n = i;
			List<String> value = findPerm(n);
			for (String val : value) {
				if (Integer.valueOf(val) <= b && Integer.valueOf(val) >= a
						&& n < Integer.valueOf(val)) {
					dupC.add(n + "-" + val);
				}
			}
		}
		return dupC.size();
	}

	private static List<String> findPerm(int num) {
		String numString = String.valueOf(num);
		List<String> value = new ArrayList<String>();
		for (int i = 0; i < numString.length(); i++) {
			String temp = charIns(numString, i);
			if (!temp.equalsIgnoreCase(numString)) {
				value.add(charIns(numString, i));
			}
		}
		return value;

	}

	public static String charIns(String str, int j) {
		String begin = str.substring(0, j);
		String end = str.substring(j);
		return end + begin;
	}
}
import java.io.*;
import java.util.StringTokenizer;

public class klick
{
    public static void main(String []args)
    {
        try{
            FileInputStream fstream = new FileInputStream("input.in");
              DataInputStream in = new DataInputStream(fstream);
              BufferedReader br = new BufferedReader(new InputStreamReader(in));
              String strLine;
              int n=0;
              int i;
            while ((strLine = br.readLine()) != null)   
            {
                n=n+1;
                if (n==1) i = Integer.parseInt(strLine);
                else System.out.println (parse(strLine,n-1));
            }
  in.close();
    }catch (Exception e){//Catch exception if any
  System.err.println("Error: " + e.getMessage());
  }
    }

    private static String parse(String string1,int oo) 
    {
        String str="";
        int count =0;
        long aa = 0;
        long bb = 0; 
        
  	  StringTokenizer stringTokenizer = new  StringTokenizer(string1);
  	  	while(stringTokenizer.hasMoreTokens())
		  {
		  aa = Integer.parseInt(stringTokenizer.nextToken());
		  bb = Integer.parseInt(stringTokenizer.nextToken());
		  }
        
  	  for (long i = aa ;  i < bb;  i = i+1) 
  	  {    
  		  /////////////
  		  if(i<10)
  		  {
  			  count = 0;
  		  }
  		  /////////////////////////
  		  else if(i>=10 && i<100)
  		  {
  			int m = (int) (i/10);
  			int n = (int) (i%10);	
  			int nm = 10*n + m;
  			if(i<nm && nm<= bb)
  			{ count++;}
  			
  		  }
  		  ////////////////////////
  		else if(i>=100 && i<1000)
		  {
  			int mn = (int) (i/10);
  			int z = (int) (i%10);	
  			int zmn = 100*z + mn;
  			if(i<zmn && zmn<= bb)
  			{ count++;}  	
  			
  			
  			int m = (int) (i/100);
  			int nz = (int) (i%100);	
  			int nzm = 10*nz + m;
  			if(i<nzm && nzm<= bb)
  			{ count++;}  			
  			
  			
  			
		  }
  		  //////////////////////////////////////////
  		else if(i>=1000 && i<10000)
		  {
  			int mnz = (int) (i/10);
  			int t = (int) (i%10);	
  			int tmnz = 1000*t + mnz;
  			if(i<tmnz && tmnz<= bb )
  			{ count++;}  	

  			
  			int mn = (int) (i/100);
  			int zt = (int) (i%100);	
  			int ztmn = 100*zt + mn;
  			if(i<ztmn && ztmn<= bb)
  			{ count++;}  			
  	
  			
  			
  			int m = (int) (i/1000);
  			int nzt = (int) (i%1000);	
  			int nztm = 10*nzt + m;
  			if(i<nztm && nztm<= bb && (mn!=zt))
  			{ count++;}  			
  	  			
  			
  			
		  }
  		  ////////////////////////////////////
  		else if(i>=10000 && i<100000)
		  {
  			int mnzt = (int) (i/10);
  			int w = (int) (i%10);	
  			int wmnzt = 10000*w + mnzt;
  			if(i<wmnzt && wmnzt<= bb )
  			{ count++;}  	

  			
  			int mnz = (int) (i/100);
  			int tw = (int) (i%100);	
  			int twmnz = 1000*tw + mnz;
  			if(i<twmnz && twmnz<= bb)
  			{ count++;}  			
 	
  			
  			
  			int mn = (int) (i/1000);
  			int ztw = (int) (i%1000);	
  			int ztwmn = 100*ztw + mn;
  			if(i<ztwmn && ztwmn<= bb )
  			{ count++;}  			
 
  			
  			int m = (int) (i/10000);
  			int nztw = (int) (i%10000);	
  			int nztwm = 10*nztw + m;
  			if(i<nztwm && nztwm<= bb )
  			{ count++;}  			
 			
  			
  			
		  }
  		else if(i>=100000 && i<1000000)
		  {
  			int mnzt = (int) (i/10);
  			int w = (int) (i%10);	
  			int wmnzt = 100000*w + mnzt;
  			if(i<wmnzt && wmnzt<= bb )
  			{ count++;}  	
 
  			
  			int mnz = (int) (i/100);
  			int tw = (int) (i%100);	
  			int twmnz = 10000*tw + mnz;
  			if(i<twmnz && twmnz<= bb)
  			{ count++;}  			
  	  	
  			
  			
  			int mn = (int) (i/1000);
  			int ztw = (int) (i%1000);	
  			int ztwmn = 1000*ztw + mn;
  			if(i<ztwmn && ztwmn<= bb )
  			{ count++;}  			
  	
  			
  			int m = (int) (i/10000);
  			int nztw = (int) (i%10000);	
  			int nztwm = 100*nztw + m;
  			if(i<nztwm && nztwm<= bb &&(mn!=ztw))
  			{ count++;}  			
  		
  			
  			int ml = (int) (i/100000);
  			int nztwx = (int) (i%100000);	
  			int nztwxm = 10*nztwx + ml;
  			if(i<nztwxm && nztwxm<= bb &&(mn!=ztw) )
  			{ count++;}  			
  					
  			
  			
		  }
  		else if(i>=1000000 && i<10000000)
		  {
 			int mnzt = (int) (i/10);
  			int w = (int) (i%10);	
  			int wmnzt = 1000000*w + mnzt;
  			if(i<wmnzt && wmnzt<= bb )
  			{ count++;}  	
 
  			
  			int mnz = (int) (i/100);
  			int tw = (int) (i%100);	
  			int twmnz = 100000*tw + mnz;
  			if(i<twmnz && twmnz<= bb)
  			{ count++;}  			
	
  			
  			
  			int mn = (int) (i/1000);
  			int ztw = (int) (i%1000);	
  			int ztwmn = 10000*ztw + mn;
  			if(i<ztwmn && ztwmn<= bb )
  			{ count++;}  			

  			
  			int m = (int) (i/10000);
  			int nztw = (int) (i%10000);	
  			int nztwm = 1000*nztw + m;
  			if(i<nztwm && nztwm <= bb )
  			{ count++;}  			
  			
  			
  			int ml = (int) (i/100000);
  			int nztwx = (int) (i%100000);	
  			int nztwxm = 100*nztwx + ml;
  			if(i<nztwxm && nztwxm <= bb )
  			{ count++;}  			
  			
  			
  			
  			int a = (int) (i/1000000);
  			int bcdefg = (int) (i%1000000);	
  			int bcdefga = 10*bcdefg + a;
  			if(i<bcdefga && bcdefga<= bb  )
  			{ count++;}  			
  			
  			
		  }
  		else if(i>=10000000 && i<100000000)
		  {}
  		  else
  		  {}
  		  
  		  
  		  //////////////
  		  
  		  
  	    
  	  }

   
        return "Case #"+oo+": "+count;
     }
    
 
    
}

