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.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.Date;
import java.util.HashSet;
import java.util.StringTokenizer;

public class GCJ2012QC {
	static HashSet<Integer> set = new HashSet<Integer>();
	static final int ZERO = 48;

	public static void main(String[] args) throws Exception {
		BufferedReader r = new BufferedReader(new InputStreamReader(System.in));
		PrintWriter pw = new PrintWriter(System.out);
		StringTokenizer st;
		int t = parseInt(r.readLine());
		// long time = new Date().getTime();
		int a, b, result;
		for (int i = 1; i <= t; i++) {
			st = new StringTokenizer(r.readLine());
			a = parseInt(st.nextToken());
			b = parseInt(st.nextToken());
			result = solve(a, b);
			pw.println("Case #" + i + ": " + result);
		}
		// time = new Date().getTime() - time;
		pw.flush();
		// System.out.println(time / 1000);
	}

	private static int solve(int a, int b) {
		int result = 0;
		for (int i = a; i < b; i++) {
			result += calculate(i, b);
		}
		return result;
	}

	private static int calculate(int k, int b) {
		String s = Integer.toString(k);
		int n = s.length();
		int rotated;
		String s1;
		set.clear();
		for (int i = 1; i < n; i++) {
			s1 = s.substring(i) + s.substring(0, i);
			rotated = parseInt(s1);
			if (rotated > k && rotated <= b && !set.contains(rotated)) {
				set.add(rotated);
			}
		}
		return set.size();
	}

	private static int parseInt(String s) {
		int len = s.length();
		int num = s.charAt(0) - ZERO;
		for (int i = 1; i < len; i++) {
			num = num * 10 + s.charAt(i) - ZERO;
		}
		return num;
	}
}
