import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class RecycledNumbers{
	
	
	
	int getcount(int small,int large){
		int count = 0;
		for(int currnum = small; currnum < large; currnum++){
			int permut = currnum;
			int no_of_digits = 0;
			while(permut > 0){
				permut = permut/10;
				no_of_digits++;
			}
			int lastDigit = currnum % 10;
			permut = currnum / 10;
			permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
			while(permut != currnum){
				
				if(permut >= currnum && permut <= large){
					
					count++;
				}
				lastDigit = permut % 10;
				permut = permut / 10;
				permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
				
			}
			
		}
		
		return count;
	}
	
	public static void main(String args[]){
		RecycledNumbers d = new RecycledNumbers();
		
		int no_of_cases = 0;
		String input = "";
		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		try{
			no_of_cases = Integer.parseInt(br.readLine());
		}
		catch(Exception e){
			System.out.println("First line is not a number");
		}
		
		for(int i=1; i <= no_of_cases;i++){
			try{
				input = br.readLine();
			}
			catch(Exception e){
				System.out.println("Number of test cases different from the number mentioned in first line");
			}
			
			System.out.print("Case #" +i+": ");
			
			StringTokenizer t =  new StringTokenizer(input);
			int small=0,large=0;
			if(t.hasMoreTokens()){
				small = Integer.parseInt(t.nextToken());
			}
			if(t.hasMoreTokens()){
				large = Integer.parseInt(t.nextToken());
			}
			System.out.println(d.getcount(small,large));
			
		}
		
		
		

	}
	
	
}
import java.io.*;
class RNumber
{
 public static void main(String args[])throws Exception
 { 
    String[] output;
    BufferedReader in=new BufferedReader(new InputStreamReader(System.in));
	FileOutputStream fo=new FileOutputStream("probB.out");
	int T=Integer.parseInt(in.readLine());
	output=new String[T];
	int[][] inp=new int[T][];
	String temp="";
	for(int i=0;i<T;i++){
	temp=in.readLine();
	inp[i]=new int[]{Integer.parseInt(temp.split(" ")[0]),Integer.parseInt(temp.split(" ")[1])};
	}
	
	for(int i=0;i<T;i++){
	
	 int n=inp[i][0],m=inp[i][1],inc=0;
	 for(int nn=n;nn<=m;nn++){
		for(int mm=n;mm<=m;mm++){
		if(!(mm==nn)){
		 String nS=Integer.toString(nn);
		 String mS=Integer.toString(mm);
		 if(nS.length()==mS.length()){
		  int len=nS.length();
		  for(int ee=0;ee<len;ee++){
		   if(nS.equals(mS)){
		    inc++;
			break;
		   }else{
		    char exp=nS.charAt(0);
			String sa="";
			for(int yy=1;yy<len;yy++){
			sa+=nS.charAt(yy);
			}
			sa+=exp;
			nS=sa;
		   }
		   
		  }
		 }
		}
		}
	  }
	  output[i]="Case #"+(i+1)+": "+(inc/2);
	}
	
	   for(int d=0;d<output.length;d++){
    System.out.println(output[d]);
	if(d==output.length-1){
    fo.write((output[d]).getBytes());}
	else
	fo.write((output[d]+'\n').getBytes());
   }
 }
}