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


public class Main {

//	static int MAX = 10000;
	static int MAX = 2000000;
	static Object[] All = new Object[MAX+1];
	
	static int size( int x ) {
		if(x>999999) return 7;
		if(x>99999)  return 6;
		if(x>9999)   return 5;
		if(x>999)    return 4;
		if(x>99)     return 3;
		if(x>9)      return 2;
		return 1;
	}
	static int[] rotate( int value ) {
		List<Integer> result = new ArrayList<Integer>();
		int[] V = new int[8];
		int s = size(value);
		int x = value;
		
		for(int i=s-1;i>=0;i--) {
			V[i] = x%10;
			x /=10;
		}
		int rot;
		for(int i=1; i<s; i++) {
			if(V[i]!=0){
				rot=0;
				for(int j=0,ii=i;j<s; j++,ii=(ii+1)%s){
					rot=rot*10+V[ii];
				}
				if(rot>value && !result.contains(rot))
					result.add(rot);
			}
		}
		if( result.isEmpty() )
			return null;
		int[] r = new int[result.size()];
		for(int i=0; i<r.length; i++)
			r[i]=result.get(i);
		return r;
	}
	
	static void precalculate() {
		for(int i=1; i<=MAX; i++){
			All[i] = rotate(i);
		}
	}
	static int solve( Scanner in ) {
		int A, B, sol=0;
		
		A = in.nextInt();
		B = in.nextInt();

		for( int i=A; i<=B; i++) {
//			List<Integer> result = rotate(i);
			if( All[i]!=null ) {
				for(int value: (int[])All[i] ) {
					if( value <= B )
						sol++;
				}
			}
		}

		return sol;
	}
	
	public static void main ( String args[] ) {
		int T; 
		Scanner in = new Scanner(System.in);
		T = in.nextInt();
		int cnt=0;
		int sol;
		precalculate();
		for( cnt=1; cnt<=T; cnt++ ) {
			sol = solve( in );
			System.out.printf("Case #%d: %d\n", cnt, sol);
		}

	}
}

import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintStream;
import java.util.HashSet;
import java.util.Scanner;

/**
 * @author Mark Devine
 * 
 */
public class C {
	static final boolean DEBUG = false;
	static Scanner in;
	static PrintStream out;

	public static void main(String[] args) throws FileNotFoundException {
		if (DEBUG) {
			in = new Scanner(new File("t"));
			out = System.out;
		} else {
			in = new Scanner(new File(C.class.getName() + ".in"));
			out = new PrintStream(C.class.getName() + ".out");
		}
		int T = i();
		for (int i = 0; i < T; i++) {
			pl(f("Case #%d: %s", i + 1, solve()));
		}
		out.close();
		in.close();
		System.out.println("Done");
	}

	static String solve() {
		HashSet<String> done = new HashSet<String>();
		int A = i();
		int B = i();

		int pairs = 0;

		for (int n = A; n < B; n++) {
			String num = Integer.toString(n);
			for (int i = 1; i < num.length(); i++) {
				num = num.substring(1, num.length()) + num.charAt(0);
				int test = Integer.parseInt(num);
				if (test >= A && test <= B && n < test) {
					String map = n + ":" + test;
					if (!done.contains(map)) {
						done.add(map);
						pairs++;
					}
				}
			}
		}

		return pairs + "";
	}

	static void p(String x) {
		out.print(x);
	}

	static void pl(String x) {
		out.println(x);
	}

	static String f(String format, Object... args) {
		return String.format(format, args);
	}

	static int i() {
		return in.nextInt();
	}

	static long l() {
		return in.nextLong();
	}

	static String s(String pattern) {
		return in.next(pattern);
	}

	static String li() {
		return in.nextLine();
	}
}