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.BufferedReader;
import java.io.FileReader;


public class C {

	private static final String head = "Case #";

	public static void main(String[] args) {
        try{
            FileReader f = new FileReader(args[0]);
            BufferedReader b = new BufferedReader(f);
            String s;
            boolean ff = false;
            int c = 0;
            while((s = b.readLine())!=null){
            	if (!ff){ff=true;continue;}
            	else {
            		c++;
            		System.out.println(head + c + ": " + C.getI(s));
            	}
            }
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
        	
        }
	}
	
	private static int getI(final String line) {
		int r = 0;
		int a,b;
		String[] sp = line.split(" ");
		a = Integer.valueOf(sp[0]);
		b = Integer.valueOf(sp[1]);
		for (int x = a; x <= b; x++) {
			for (int y = 0; y < String.valueOf(x).length(); y++) {
				if (y != 0) {
					int re = C.getRR(x, y);
					if (re <= 11 || re >= x) {continue;}
					else {
						if (re >= a && re <= b) {
							r++;		
						}
					}
				}
			}
		}
		return r;
	}
	private static Integer getRR(final int v, final int o) {
		StringBuilder sb = new StringBuilder();
		String str = String.valueOf(v);
		sb.append(str.substring(o));
		sb.append(str.substring(0, o));
		return Integer.valueOf(sb.toString());
	}
}
