import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;


public class Main {

//	static int MAX = 10000;
	static int MAX = 2000000;
	static Object[] All = new Object[MAX+1];
	
	static int size( int x ) {
		if(x>999999) return 7;
		if(x>99999)  return 6;
		if(x>9999)   return 5;
		if(x>999)    return 4;
		if(x>99)     return 3;
		if(x>9)      return 2;
		return 1;
	}
	static int[] rotate( int value ) {
		List<Integer> result = new ArrayList<Integer>();
		int[] V = new int[8];
		int s = size(value);
		int x = value;
		
		for(int i=s-1;i>=0;i--) {
			V[i] = x%10;
			x /=10;
		}
		int rot;
		for(int i=1; i<s; i++) {
			if(V[i]!=0){
				rot=0;
				for(int j=0,ii=i;j<s; j++,ii=(ii+1)%s){
					rot=rot*10+V[ii];
				}
				if(rot>value && !result.contains(rot))
					result.add(rot);
			}
		}
		if( result.isEmpty() )
			return null;
		int[] r = new int[result.size()];
		for(int i=0; i<r.length; i++)
			r[i]=result.get(i);
		return r;
	}
	
	static void precalculate() {
		for(int i=1; i<=MAX; i++){
			All[i] = rotate(i);
		}
	}
	static int solve( Scanner in ) {
		int A, B, sol=0;
		
		A = in.nextInt();
		B = in.nextInt();

		for( int i=A; i<=B; i++) {
//			List<Integer> result = rotate(i);
			if( All[i]!=null ) {
				for(int value: (int[])All[i] ) {
					if( value <= B )
						sol++;
				}
			}
		}

		return sol;
	}
	
	public static void main ( String args[] ) {
		int T; 
		Scanner in = new Scanner(System.in);
		T = in.nextInt();
		int cnt=0;
		int sol;
		precalculate();
		for( cnt=1; cnt<=T; cnt++ ) {
			sol = solve( in );
			System.out.printf("Case #%d: %d\n", cnt, sol);
		}

	}
}

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

public class C {
    BufferedReader ins;
    PrintStream outs;

    static String INPUT = "C-large.in";
    static String OUTPUT;

    static {
        OUTPUT = "C-large.out";
    }

    Map<String, Set<String>> map = new HashMap<String, Set<String>>();
    
    public C(BufferedReader ins, PrintStream outs) {
        this.ins = ins;
        this.outs = outs;
    }

    public void preprocess() {
        for(int j = 1; j<=2000000; j++) {
            String k = new Integer(j).toString();
            Set<String> set = new HashSet<String>();
            int sz = k.length();
            for(int i = 1; i<sz; i++) {
                set.add(k.substring(i) + k.substring(0,i));
            }
            map.put(k, set);
        }
    }
    
    public int permuteK(int k, int b) {
        int sz = new Integer(b).toString().length();
        int ret = 0;

        Set<String> set = new HashSet<String>();
        for(int i = 0; i<sz; i++) {
            String x = new Integer(k).toString();
            String sb = x.substring(i) + x.substring(0,i);
            
            assert(sb.length() == sz);
            
            int newk = Integer.parseInt(sb);
            if(newk > k && newk <=b) {
                if(!set.contains(x+"-"+sb)) {
                    set.add(x+"-"+sb);
                }
                ret++;
            }
        }
        return set.size();
    }
   
    public int permuteL(int k, int b) {
        String m = new Integer(k).toString();
        int count = 0;
        for(String r : map.get(m)) {
            int newk = Integer.parseInt(r);
            if(newk>k && newk<=b) count++;
        }
        return count;
    }
    public int go(int a, int b) {
        int count = 0;
        for(int k = a; k < b; k++) {
            count += permuteK(k, b);
        }
        return count;
    }

    public void process() throws Exception {
//        preprocess();
 //       System.out.println("Hi");
       //Read input
       int t = Integer.parseInt(ins.readLine());

       for(int T=1; T<=t;T++) {
            String x = ins.readLine().trim().replaceAll(" +", " ");
            String[] tokens = x.split(" ");
            int a = Integer.parseInt(tokens[0]);
            int b = Integer.parseInt(tokens[1]);
            
            outs.println("Case #" + T + ": " + go(a,b));
        }
    }

    public static void main(String args[]) throws Exception {
        //Input
        InputStreamReader fis = new FileReader(INPUT);
        BufferedReader bis = new BufferedReader(fis);

        //Output
        PrintStream ps = OUTPUT!=null ? new PrintStream(OUTPUT) : System.out;
        
        C c = new C(bis, ps);

        c.process();
        return;
    }
}
