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.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Scanner;

public class Recycled {
	private int A;
	private int B;
	private int pairs;

	/**
	 * Constructor
	 * 
	 * @param a
	 * @param b
	 */
	public Recycled(int a, int b) {
		A = a;
		B = b;
		pairs = 0;
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		try {
			// Input I/O handler
			File input = new File(args[0]);
			Scanner sc = new Scanner(input);
			int cases = Integer.parseInt(sc.nextLine());

			// Output I/O handler
			FileWriter output = new FileWriter(args[1], true);
			PrintWriter pw = new PrintWriter(output);

			// Process all the cases
			for (int i = 1; i <= cases; i++) {
				String[] data = sc.nextLine().split(" ");
				Recycled solver = new Recycled(Integer.parseInt(data[0]),
						Integer.parseInt(data[1]));
				solver.solve();
				pw.println("Case #" + i + ": " + solver.getPairs());
				pw.flush();

			}
		} catch (NumberFormatException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	/**
	 * Returns the number of recycled number pairs.
	 * @return
	 */
	private int getPairs() {
		return pairs;
	}

	/**
	 * Solves the given test case.
	 */
	private void solve() {
		for (int n = A; n <= B; n++) {
			String written = "" + n;
			for (int k = 1; k < written.length(); k++) {
				String swap= written.substring(k) + written.substring(0,k);
				if (written.charAt(0)=='0'){
					continue;
				}
				Integer m= Integer.parseInt(swap);
				if (A <= n && n < m && m <= B) {
					pairs++;
				}
			}
		}
	}
}
