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.util.Scanner;


public class Test {
  public static void main(String []args){
    int numT=0;
    Scanner kb=new Scanner(System.in);
    numT = kb.nextInt();
    int a[] = new int[numT];
    int b[]=new int[numT];
    for (int i = 0; i < numT; i++) {
      a[i] = kb.nextInt();
      b[i]=kb.nextInt();
    }
    for(int i=0;i<numT;i++){
      System.out.println("Case #"+(i+1)+":"+" "+cal(a[i],b[i]));
    }
    
  }
  
  public static int cal(int A,int B){
    int score=0;
    for(int i=A;i<=B;i++){
      String num=i+"";
      for(int j=1;j<num.length();j++){
        String s=num.substring(0,j);
        String t = num.substring(j, num.length());
        String sum=t+s;
        int sb=Integer.parseInt(sum); 
        if (sb <= B&&sb>=A&&sb!=i&&sb>i){ score++;        }
      }
    }
    return score;
    
  }
}
