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.List;
import java.util.ArrayList;
import java.util.Scanner;

public class C {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int T = in.nextInt();
		for (int t = 0; t < T; t++){
			int A = in.nextInt(); int B = in.nextInt();
			int n = A;
			int res = 0;
			while (n < B) {
				res = res+recycledPair(n,B);
				n++;
			}
			System.out.println("Case #"+(t+1)+": "+res);
		}
	}
	
	private static int recycledPair(int n, int B){
		int count = 0;
		int len = Integer.toString(n).length(); //len of digits
		String nstr = Integer.toString(n);
		List<Integer> solSofar = new ArrayList<Integer>();
		
		for (int i=1; i<len;i++){
			String toMove = nstr.substring(0, i);
			String last = nstr.substring(i);
			String mstr = last + toMove;
			Integer m = Integer.parseInt(mstr);
			if (mstr.length()==len && n < m && m <= B && !solSofar.contains(m)) {
				solSofar.add(m);
				count++;
			}
		}
		return count;
	}

}
