import java.util.*;
import java.lang.*;
import java.math.*;
import java.io.*;

import static java.lang.Math.*;
import static java.util.Arrays.*;
import static java.util.Collections.*;

public class C{
	Scanner sc=new Scanner(System.in);

	int INF=1<<28;
	double EPS=1e-9;

	int caze, T;
	int A, B;

	void run(){
		T=sc.nextInt();
		for(caze=1; caze<=T; caze++){
			A=sc.nextInt();
			B=sc.nextInt();
			solve();
		}
	}

	void solve(){
		int ans=0;
		for(int n=A; n<=B; n++){
			int digit=(int)(log10(n)+EPS);
			int d=(int)pow(10, digit);
			// debug("n", n);
			for(int m=rot(n, d); m!=n; m=rot(m, d)){
				// debug("m", m);
				if(n<m&&m<=B){
					ans++;
				}
			}
		}
		answer(ans+"");
	}

	int rot(int n, int d){
		return n/10+n%10*d;
	}

	void answer(String s){
		println("Case #"+caze+": "+s);
	}

	void println(String s){
		System.out.println(s);
	}

	void print(String s){
		System.out.print(s);
	}

	void debug(Object... os){
		System.err.println(deepToString(os));
	}

	public static void main(String[] args){
		try{
			System.setIn(new FileInputStream("dat/C-small.in"));
			System.setOut(new PrintStream(new FileOutputStream("dat/C-small.out")));
		}catch(Exception e){}
		new C().run();
		System.out.flush();
		System.out.close();
	}
}

package hk.polyu.cslhu.codejam.solution.impl.qualificationround;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import hk.polyu.cslhu.codejam.solution.Solution;

import org.apache.log4j.Logger;

public class SpeakingInTongues extends Solution {
	private Map<String, String> codeMap;
	private String oriText;
	
	private void setCodeMap() {
		this.codeMap = new HashMap<String, String>();
		codeMap.put("y", "a");
		codeMap.put("e", "o");
		codeMap.put("q", "z");
		codeMap.put("z", "q");
		
		List<String> oriTextList = new ArrayList<String>();
		oriTextList.add("ejp mysljylc kd kxveddknmc re jsicpdrysi");
		oriTextList.add("rbcpc ypc rtcsra dkh wyfrepkym veddknkmkrkcd");
		oriTextList.add("de kr kd eoya kw aej tysr re ujdr lkgc jv");
		
		List<String> encodedTextList = new ArrayList<String>();
		encodedTextList.add("our language is impossible to understand");
		encodedTextList.add("there are twenty six factorial possibilities");
		encodedTextList.add("so it is okay if you want to just give up");
		
		for (int i = 0; i < oriTextList.size(); i++) {
			String oriText = oriTextList.get(i);
			String encodedText = encodedTextList.get(i);
			
			for (int j = 0; j < oriText.length(); j++) {
				String ori = oriText.substring(j, j + 1);
				String encoded = encodedText.substring(j, j + 1);
				
				if (ori.equals(" "))
					continue;
				
				if (! codeMap.containsKey(ori))
					codeMap.put(ori, encoded);
				else if (! codeMap.get(ori).equals(encoded))
					logger.error("Found duplicate encoded string for input " + ori);
			}
		}
		
		logger.info("The size of code map is " + this.codeMap.size());
	}
	
	@Override
	public void setProblem(List<String> problemDesc) {
		// TODO Auto-generated method stub
		this.oriText = problemDesc.get(0);
	}

	@Override
	public void solve() {
		// TODO Auto-generated method stub
		this.setCodeMap();
		
		this.result = "";
		
		for (int i = 0; i < this.oriText.length(); i++) {
			String ori = this.oriText.substring(i, i + 1);
			
			if (ori.equals(" "))
				this.result += ori;
			else if (this.codeMap.containsKey(ori))
				this.result += this.codeMap.get(ori);
			else
				logger.error("Failure to find the encoded string for " + ori);
		}
	}
}
