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 RecycledNumbers {
	
	static int A, B;

	public static void main(String[] args) throws IOException {
		Kattio io = new Kattio(System.in, new FileOutputStream("recycle.out"));
		int T = io.getInt();
		for (int test = 1; test <= T; test++) {
			A = io.getInt();
			B = io.getInt();
			int res = 0;
			for (int i = A; i <= B; i++) {
				res += recycle(i);
			}
			io.println("Case #"+test+": "+res);
		}
		io.close();
	}
	
	static int recycle(int num) {
		int start = num;
		if (num/10 == 0) return 0;
		int m = 1;
		while (m <= num) {
			m*= 10;
		}
		m/= 10;
		int d = num/m;
		int res = 0;
		while (true) {
			num %= m;
			num *= 10;
			num += d;
			d = num/m;
			if (d != 0 && num > start && num <= B) res++;
			if (num == start) return res;
		}
	}

	static class Kattio extends PrintWriter {
	    public Kattio(InputStream i) {
		super(new BufferedOutputStream(System.out));
		r = new BufferedReader(new InputStreamReader(i));
	    }
	    public Kattio(InputStream i, OutputStream o) {
		super(new BufferedOutputStream(o));
		r = new BufferedReader(new InputStreamReader(i));
	    }

	    public boolean hasMoreTokens() {
		return peekToken() != null;
	    }

	    public int getInt() {
		return Integer.parseInt(nextToken());
	    }

	    public double getDouble() { 
		return Double.parseDouble(nextToken());
	    }

	    public long getLong() {
		return Long.parseLong(nextToken());
	    }

	    public String getWord() {
		return nextToken();
	    }

	    private BufferedReader r;
	    private String line;
	    private StringTokenizer st;
	    private String token;

	    private String peekToken() {
		if (token == null) 
		    try {
			while (st == null || !st.hasMoreTokens()) {
			    line = r.readLine();
			    if (line == null) return null;
			    st = new StringTokenizer(line);
			}
			token = st.nextToken();
		    } catch (IOException e) { }
		return token;
	    }

	    private String nextToken() {
		String ans = peekToken();
		token = null;
		return ans;
	    }
	}
}