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.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Arrays;
import java.util.HashSet;

public class CRecycledNumbers {
	public static HashSet<Integer> hs = new HashSet<Integer>();
	public static int m;

	public static void solve() throws NumberFormatException, IOException {
		File f = new File("E:\\downloads\\C-large.in");
		BufferedReader reader = new BufferedReader(new FileReader(f));
		File f2 = new File("C:\\Users\\kimo\\Desktop\\out.txt");
		BufferedWriter writer = new BufferedWriter(new FileWriter(f2));
		int x = Integer.parseInt(reader.readLine());
		String st[] = null;

		for (int k = 0; k < x; k++) {
	
			st = reader.readLine().split(" ");
			int n = Integer.parseInt(st[0]);
			m = Integer.parseInt(st[1]);
			int count = 0;
			for (int i = n; i < m + 1; i++) {
				
				if (i < m) {
					count += numOfways(i + "");
				}
			}
			writer.write("Case #" + (k + 1) + ": " + count);
		writer.newLine();
		}
		writer.close();
		reader.close();
	}

//	public static boolean check(String n, String m) {
//		boolean found = false;
//		int i = 0;
//		for (; i < n.length() && !found; i++) {
//			if (n.charAt(i) == m.charAt(0)) {
//				found = true;
//			}
//		}
//
//		int j = 0;
//		i = i - 1;
//		while (j < m.length() && found) {
//
//			if (n.charAt(i) != m.charAt(j))
//				found = false;
//			j++;
//			i = (i + 1) % m.length();
//		}
//		return found;
//	}

	public static int numOfways(String n) {
		String tail = "";
		String head = "";
		String ss = "";
		int counter = 0;
hs.clear();
		for (int i = 1; i < n.length(); i++) {
			tail = n.substring(i, n.length());
			head = n.substring(0, i);
			ss = tail + head;
			
			int ssi = Integer.parseInt(ss);
			if ((ssi + "").length() == n.length()&&ssi>Integer.parseInt(n)) {
				if ( ssi <= m&&!hs.contains(ssi)) {
					hs.add(ssi);
					
					counter++;
				}
				
			}

		}
		return counter;

	}

	public static void main(String[] args) throws NumberFormatException,
			IOException {
		solve();
		//m=500;
		//System.out.println(numOfways("301"));
	}

}
