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();
	}
}

import java.io.*;
import java.util.*;
class Q3
{
    public static void main(String str[])throws IOException
    {
 //       long time1=System.currentTimeMillis();
        FileReader fr=new FileReader("C-small-attempt0.in");
//        FileReader fr=new FileReader("C-large.in");
        BufferedReader br=new BufferedReader(fr);
        FileWriter fw=new FileWriter("output.txt");
        BufferedWriter bw=new BufferedWriter(fw);
        PrintWriter pw=new PrintWriter(bw);
        int T=Integer.parseInt(br.readLine());
        for(int i=1;i<=T;i++)
        {
            StringTokenizer st=new StringTokenizer(br.readLine());
            String A=st.nextToken();
            String B=st.nextToken();
            int l=A.length();
            int a=Integer.parseInt(A);
            int b=Integer.parseInt(B);
            int num=0;
//            int check[][]=new int[288][2];
//            int loop=0;
            for(int j=a;j<=b;j++)
            {
                String tmp=""+j;
                int cc[]=new int[B.length()];
                int index=0;
                for(int k=l-1;k>=1;k--)
                {
                    String tmp1=tmp.substring(k)+tmp.substring(0,k);
                    if(tmp1.charAt(0)=='0')
                    continue;
                    int t1=Integer.parseInt(tmp1);
                    if(t1>j && t1>=a && t1<=b)
                    {
                        int flag=0;
                        for(int kk=0;kk<index;kk++)
                        {
                            if(cc[kk]==t1)
                            flag=1;
                        }
                        if(flag==1)
                        continue;
                        cc[index++]=t1;
                        num++;
                    }
                }
            }
            pw.println("Case #"+i+": "+num);
  /*          for(int i1=0;i1<288;i1++)
        {
            for(int j=i1+1;j<288;j++)
            {
                if(check[j][0]==check[i1][0] && check[j][1]==check[i1][1])
                System.out.println(i1+"......................"+j+"................"+check[j][0]+".................."+check[j][1]);
            }
        }  */
        }
        
        pw.close();
        bw.close();
        fw.close();
        br.close();
        fr.close();
//        System.out.println(System.currentTimeMillis()-time1);
    }
}