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);
		}

	}
}

package com.google.codejam;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

public class DancingWithGooglers {

	private int limit(long min, long max){
		if (min>max)
			return 0;
		int count = 0;
		for (long i = min; i <= max; i++) {
			int loopCount = 1;
			long start = i;
			long rotation = i;
			do {
				rotation = rotate(start,loopCount);
				if ( rotation <= max && rotation > start) {
//					System.out.println("pair numbers : " + start + "," + rotation);
					count+=1;
				}
//				else{
//					System.out.println("!!not pair numbers : " + start + "," + rotation);
//				}
				loopCount++;

			} while (loopCount<=Long.toString(start).length());
		}
		return count;
	}

//	private long rotate(long x){
//		if (x<9) {
//			return x;
//		}
//		long firstpart = x/10;
//		long secondpart = x%10;
//		double firstpartlen = (String.valueOf(firstpart)).length();
//		int mul = (int) Math.pow(10, firstpartlen);
//		long fin = (secondpart * mul) + firstpart;
//		return fin;
//	}
	private long rotate(long x,int index){
		if (x<9) {
			return x;
		}
		String s = Long.toString(x);
		String s1 = s.substring(0, s.length()-index);
		String s2 = s.substring(s.length()-index, s.length());
		String s3 = s2+s1;
		return Long.parseLong(s3);
	}
	public static void main(String[] args) throws IOException{
		BufferedReader in = new BufferedReader(new FileReader("resources/googlecodejam/dancingwiththegooglers.txt"));
		String strLine;
		int caseLine  = 0;
		int lineCount = 0;
		DancingWithGooglers dancingWithGooglers = new DancingWithGooglers();
		while ((strLine = in.readLine()) != null) {
			// Print the content on the console
			if (lineCount == 0) {
				lineCount+=1;
				continue;
			}
			caseLine += 1;
			long min = Long.parseLong(strLine.split(" ")[0]);
			long max = Long.parseLong(strLine.split(" ")[1]);
			System.out.println("Case #" + caseLine + ": " + dancingWithGooglers.limit(min,max));
		}

	}
}
