import java.util.*;
import java.io.*;

public class recycled_numbers {
	public static void main(String[]a) throws Exception{
		
		Scanner f = new Scanner(new File(a[0]));
		int result=0;
		int A,B;
		String n,m;
		HashSet<String> s=new HashSet<String>();
		
		int T=f.nextInt();	//T total case count
		for (int t=1; t<=T;t++){//for each case t
			
			s.clear();
			result=0;				//reset
			A=f.nextInt();B=f.nextInt();	//get values for next case
			
			if (A==B)result=0;//remove case not meeting problem limits 
			else{
				for(int i=A;i<=B;i++){//for each int in range
					n=Integer.toString(i);
					m=new String(n);
					//System.out.println(n);
					for (int j=1;j<n.length();j++){//move each digit to the front & test
						m = m.substring(m.length()-1)+m.substring(0,m.length()-1);
						if(m.matches("^0+[\\d]+")!=true &&
								Integer.parseInt(m)<=B &&
								Integer.parseInt(n)<Integer.parseInt(m)){
							s.add(new String(n+","+m));
							//result++;
							//System.out.println(" matched: "+m);
						}
						
					}
				}
				result = s.size();
			}

			//display output
			System.out.println("Case #" + t + ": " + result);
		}
	}
}
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;


public class Solution {
	
	public static void main(String[] args)
	{
		Scanner s = new Scanner(System.in);
		int size = s.nextInt();
		for (int count = 1; count <= size; count++){
			
			int lowB = s.nextInt();
			int highB = s.nextInt();
			int pairCount = 0;
			int bits = (lowB+"").length();
			int mod = (int)Math.pow(10, (bits-1));
			Set<Integer> seen = new HashSet<Integer>();
			//System.out.println("(" + lowB + ", " + highB + "), " + "bits = " + bits + ", mod = " + mod);
			for (int i = lowB; i <= highB; i++){
				 
				int num1 = i;
				int num2 = i;
				seen.clear();
				for (int j = 1; j < bits; j++){
					int div = num2 / mod;
					int modular = num2 % mod;
					num2 = modular * 10 + div;
					
					if (num2 < lowB || num2 <= num1 || num2 > highB || seen.contains(num2)) continue;
					//System.out.println("(" + num1 + ", " + num2 + ")");
					pairCount++;
					seen.add(num2);
				}
			}
		System.out.println("Case #" + count+ ": " + pairCount);	
		}
		
		
		
	}

}
