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 gcj;

import java.util.*;
import java.io.*;

public class RecycledNumbers {
    final static String PROBLEM_NAME = "rnum";
    final static String WORK_DIR = "D:\\Gcj\\" + PROBLEM_NAME + "\\";

    void solve(Scanner sc, PrintWriter pw) {
        int A = sc.nextInt();
        int B = sc.nextInt();
        int res = 0;
        for (int n=A; n <= B; n++) {
            String s = "" + n;
            Set<Integer> cand = new HashSet<Integer>();
            for (int st=1; st < s.length(); st++) {
                String ss = s.substring(st) + s.substring(0, st);
                int m = Integer.parseInt(ss);
                if (n < m && m >= A && m <= B)
                    cand.add(m);
            }
            res += cand.size();
        }
        pw.println(res);
    }

    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(new FileReader(WORK_DIR + "input.txt"));
        PrintWriter pw = new PrintWriter(new FileWriter(WORK_DIR + "output.txt"));
        int caseCnt = sc.nextInt();
        for (int caseNum=0; caseNum<caseCnt; caseNum++) {
            System.out.println("Processing test case " + (caseNum + 1));
            pw.print("Case #" + (caseNum+1) + ": ");
            new RecycledNumbers().solve(sc, pw);
        }
        pw.flush();
        pw.close();
        sc.close();
    }
}
