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.io.File;
import java.io.FileNotFoundException;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.util.*;


public class C {
	Scanner sc;
	PrintStream ps;

	public void solve() {
		int A = sc.nextInt();
		int B = sc.nextInt();
		
		int nr = 0;
		for (int n=A; n<=B; n++) {
			String s = n+"";
			HashSet<Integer> set = new HashSet<Integer>();
			for (int i=0; i<s.length(); i++) {
				String t = s.substring(i) + s.substring(0, i);
				int m = Integer.parseInt(t);
				if ((n < m) && (m <= B)) {
					set.add(m);
				}
			}
			nr += set.size();
		}
		
		ps.println(nr);
	}
	
	
	public void run(String[] args) throws FileNotFoundException {
		sc = new Scanner(new File("C.in"));
		ps = System.out; // new PrintWriter("C.out");
		int num_tests = sc.nextInt();
		sc.nextLine();
		
		for (int test=1; test<=num_tests; test++) {
			ps.print("Case #"+test+": ");
			
			solve();
			
		}
		ps.close();
		
	}
	
	public static void main(String[] args) throws FileNotFoundException {
		C a = new C();
		a.run(args);
	}
}
