/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package Happy;
import java.io.*;
import java.math.*;
import java.lang.*;
import java.util.*;
import java.util.Arrays.*;
import java.io.BufferedReader;
//import java.io.IOException;
//import java.io.InputStreamReader;
//import java.io.PrintWriter;
//import java.util.StringTokenizer;

/**
 *
 * @author ipoqi
 */
public class Happy {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        new Happy().haha();
    }

    public void haha() {
        BufferedReader in = null;
        BufferedWriter out = null;
        try{
            in = new BufferedReader(new FileReader("C-large.in"));
            out = new BufferedWriter(new FileWriter("LLL.out"));
            int T = Integer.parseInt(in.readLine());
            System.out.println("T="+T);

            //LinkedList<Integer> mm = new LinkedList<Integer>();
            //mm.add(new LinkedList<Integer>());
           //int[][] mm;
           //for(int ii=0;ii<mm.length;ii++){
           //     mm[0][ii] = 1;
           //}


            for(int i=0;i<T;i++){
                String[] line = in.readLine().split(" ");
                int A = Integer.parseInt(line[0]);
                int B = Integer.parseInt(line[1]);
                //System.out.print(" A = "+A+"\n");
                //System.out.print(" B = "+B+"\n");

                int ans = 0;

                
                for(int j=A;j<B;j++){
                    int n=j;
                    if(n>=10){
                        String N = Integer.toString(n);
                        int nlen = N.length();
                        List<Integer> oks = new ArrayList<Integer>();
                        for(int k=0;k<nlen-1;k++){
                            String M = "";
                            for(int kk=1;kk<=nlen;kk++){
                                 M = M + N.charAt((k+kk)%nlen);
                            }
                            int m = Integer.parseInt(M);
                            //System.out.print(" N = "+N+"\n");
                            //System.out.print(" M = "+M+"\n");

                            if(m>n && m<=B) {
                                boolean isNewOne = true;
                                for(int kkk=0;kkk<oks.size();kkk++){
                                    //System.out.print(" KKK = "+oks.get(kkk)+"\n");
                                    if(m==oks.get(kkk)){
                                        isNewOne = false;
                                    }
                                }
                                if(isNewOne){
                                    //System.out.print(" N = "+N+"\n");
                                    //System.out.print(" M = "+M+"\n");
                                    oks.add(m);
                                    ans++;
                                }
                            }
                        }
                    }
                }
                out.write("Case #"+(i+1)+": "+ans+"\n");
                System.out.print("Case #"+(i+1)+": "+ans+"\n");
            }
            in.close();
            out.close();
        }catch(Exception e){
            e.printStackTrace();
            try{
                in.close();
                out.close();
            }catch(Exception e1){
                e1.printStackTrace();
            }
        }
        System.out.print("YES!\n");
    }

}

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

public class J12QC implements Runnable {
	Scanner in;
	PrintWriter out;
	static String taskname = ".\\src\\C-large";
	int test, testn, i, j, k;

	public static void main(String[] args) {
		new Thread(new J12QC()).start();
	}

	public void solve() throws Exception {
		testn = in.nextInt();
		long A,B,C,M,M2,M1;
		long n, N;
		boolean t;

		for (test = 0; test < testn; test++) {
			out.print("Case #" + (test + 1) + ": ");
			A = in.nextLong();
			B = in.nextLong();
			M=1; C=A;
			while(C>0){C/=10; M*=10;}
			M2 = (B<M)?B:M;
			N=0; M1=M/10;
			for (long i = A; i <= M2; i++) { //length = Aexp
				n = count(i,A, M2, M);
				N+= n*(n-1)/2;
			}	
			while (M*10<B){
				M1=M; M*=10;
				for (long i = M1+1; i < M-1; i++) {
					n = count(i,M1+1, M-1, M);
					N+= n*(n-1)/2;
				}
			}
			if (M<B){
				M1=M; M*=10;
				for (long i = M1+1; i <= B; i++) {
					n = count(i,M1+1, B, M);
					N+= n*(n-1)/2;
				}
			}
			
			out.print(N+"\n");
		}
	}
	public long count(long c, long M1, long M2, long M){
		long n=0;
		boolean t =true;
		long m=M/10, C=c*10%M + c*10/M;
		if(C == c) return 0;
		C=c;
		while((m/=10) >0){
			C=C*10%M + C*10/M;
			if((C < M1)||(C>M2)) continue; //or -9*exp 
			if(C < c) {t=false; break;}
			if(C == c) {break;}
			n++;
		}
		if(t) return n+1;
		else return 0;
	}

	@Override
	public void run() {
		try {
			in = new Scanner(new File(taskname + ".in"));
			out = new PrintWriter(taskname+".out");
			//out = new PrintWriter(System.out, true);
			//			in = new BufferedReader( new InputStreamReader(System.in));
			//			out = new BufferedWriter( new OutputStreamWriter(System.out));
			solve();
			out.flush();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}
