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.*;
import java.util.*;
import java.util.regex.*;

import static java.lang.Math.*;

public class C {
	public static void main(String[] args) throws Exception {

		Scanner in = (args.length > 0) ? new Scanner(new File(args[0]))
				: new Scanner(System.in);
		int T = in.nextInt();
		for (int zz = 1; zz <= T; zz++) {
			System.err.format("#%d\n", zz);
			System.out.format("Case #%d: ", zz);

			int A = in.nextInt();
			int B = in.nextInt();
			int y = 0;

			Set<String> pairs = new HashSet<String>();

			int D = (int) Math.log10(A);
			long p0 = 10;
			long p1 = (long) Math.pow(10, D);

			for (int d = 1; d <= D; d++) {
				for (long n = A; n <= B; n++) {
					long m = ((n % p1) * p0) + (n / p1);
					if (m > n && m <= B && !pairs.contains(n + ":" + m)) {
						y++;
						pairs.add(n + ":" + m);
					}
				}
				p0 *= 10;
				p1 /= 10;
			}

			System.out.format("%d\n", y);
		}
	}
}
