import java.util.Scanner;
import java.io.*;
import java.lang.Math;


public class C{
	public static int recycle(String str){
		String[] numbers = str.split(" ");
		int min = Integer.parseInt(numbers[0]);
		int max = Integer.parseInt(numbers[1]);
		int ret = 0;

		for(int i = min; i < max; i++){
			String num = i + "";
			int len = num.length();
			int k = i;
			for(int j = 1; j < len; j++){
				k = (k/10) + (int)java.lang.Math.pow(10.0,(double)(len-1))*(k%10);
				if (k > i && k <= max)
					ret++;
				else if(k == i)
					break;
			}
		}

		return ret;
	}

	public static void main(String[] args){
		Scanner sc = null;
		String next;
		int out;
		try{
			sc = new Scanner(new File("C-large.in"));
			int cases = Integer.parseInt(sc.nextLine());
			int current = 0;
			

			FileWriter fs = new FileWriter("output.txt");
			BufferedWriter buff = new BufferedWriter(fs);
			while(current < cases){
				next = sc.nextLine();
				current++;
				out = recycle(next);
				buff.write("Case #" + current + ": " + out + "\n");
			}
			buff.close();
		}
		catch(Exception ex){}
	}
}
package com.google.cj;

public class Entry {
	public String n;
	public String m;
	
	public Entry() {
		// TODO Auto-generated constructor stub
	}

	public Entry(String n, String m) {
		super();
		this.n = n;
		this.m = m;
	}

	
	@Override
	public String toString() {
		return "Entry [n=" + n + ", m=" + m + "]";
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((m == null) ? 0 : m.hashCode());
		result = prime * result + ((n == null) ? 0 : n.hashCode());
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		Entry other = (Entry) obj;
		if (m == null) {
			if (other.m != null)
				return false;
		} else if (!m.equals(other.m))
			return false;
		if (n == null) {
			if (other.n != null)
				return false;
		} else if (!n.equals(other.n))
			return false;
		return true;
	}

	
	
}
