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.HashMap;
import java.util.Scanner;


public class RecycledNumbers {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner s = new Scanner(System.in);
		//number of case tests
		int n;
		
		int a, b;

		n = s.nextInt();
		s.nextLine();
		
		for(int t=1; t<= n; t++){
			a = s.nextInt();
			b = s.nextInt();
			s.nextLine();
			
			int counter = 0;
			for(int i = a; i<b; i++ ){
				char[] originalChars = Integer.toString(i).toCharArray();
				int length = originalChars.length;
				
				for(int j = 0; j< (length-1); j++){
					char[] recycledChars = new char[length];
					
					recycledChars[0] = originalChars[length-1];
					
					for(int r = 1; r<length; r++)
						recycledChars[r] = originalChars[r-1];
					
					if(recycledChars[0] != '0'){
						int recycled_candidate = Integer.parseInt(String.valueOf(recycledChars));
						
						if( (i<recycled_candidate) && (recycled_candidate<=b))
							counter ++;
					}
					
					originalChars = recycledChars;
				}
				
			}
			
			System.out.println("Case #" + t + ": " + counter);
		}
		
	}

}
