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.File;
import java.io.FileNotFoundException;
import java.io.PrintStream;
import java.util.Scanner;
import java.util.TreeSet;


class Pair implements Comparable<Pair>{
    int a , b;

    public Pair(int a, int b) {
        this.a = a;
        this.b = b;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final Pair other = (Pair) obj;
        if (this.a != other.a) {
            return false;
        }
        if (this.b != other.b) {
            return false;
        }
        return true;
    }

    @Override
    public int hashCode() {
        int hash = a*3;
        return hash;
    }

    public int compareTo(Pair o) {
        if ( o.a != this.a ){
            return this.a - o.a;
        }else{
            return this.b - o.b;
        }
    }


}

/**
 *
 * @author Saul Hidalgo
 */
public class Main {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        try {
            Scanner sc = new Scanner(new File("test2.txt"));
            PrintStream ps = new PrintStream(new File("output2.txt"));

            int T = sc.nextInt();
            for ( int t = 1 ; t <= T ; t++ ){
                int n = sc.nextInt() , m = sc.nextInt();
                int ans = 0;
                TreeSet<Pair> tree = new TreeSet<Pair>();

                for ( int i = n ; i <= m ; i++ ){
                    String num = i + "";
                    for ( int j = 1 ; j < num.length() ; j++ ){
                        String conv = num.substring(j) + num.substring(0, j);
                        int tt = Integer.parseInt(conv);
                        Pair p = new Pair(i, tt);
                        if ( tt > i && tt <= m && !tree.contains(p)){
                            ++ans;
                            tree.add(p);
                        }
                    }
                }
                System.out.println("Caso = " + t);
                ps.println("Case #" + t + ": " + ans);
            }

        }
        catch (FileNotFoundException ex) {
            // =(
        }
    }
}
