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.BufferedReader;
import java.io.FileReader;
import java.io.IOException;


public class problem {

	public static void main(String[] args)  throws IOException{
		final String filein = "C:\\Users\\BYTE\\Downloads\\C-small-attempt0.in";
		//final String filein = "C:\\Users\\byte\\Downloads\\NewFolder\\C-small-attempt6.txt";
	    BufferedReader in = new BufferedReader(new FileReader(filein));
	    
	    
		int tests=Integer.parseInt(in.readLine());
		
		int a=0,b=0,num=0;
		
		for(int i=0;i<tests;i++)
		{
			String s1[]=in.readLine().split(" ");
						
			a=Integer.parseInt(s1[0]);
			b=Integer.parseInt(s1[1]);
			
			//char [] arr=s1[0].toCharArray(); 
			
			for(int j=a; j<b;j++)
			{
				char [] arr=Integer.toString(j).toCharArray();
				for(int k=arr.length-1;k>0;k--)
				{
					if(arr[k]== '0')
						continue;
					else
					{
						
						String s = new String(arr);
						int z= Integer.parseInt(s.substring(k,arr.length)+s.substring(0,k));
						if(z >= a && z<=b  && z!=j && !(z<j)  )
							num++;
					}
				}
				
			}
			
			System.out.println("Case #"+(i+1)+": "+num);
			num=0;
			
		}
	}

}
