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.ArrayList;
import java.util.StringTokenizer;

/*
 * To change this template, choose Tools | Templates and open the template in the editor.
 */
/**
 *
 * @author doda
 */
public class RecycledNumbers {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws FileNotFoundException, IOException {
        // TODO code application logic here
        BufferedReader R = new BufferedReader(new FileReader("C:\\Users\\doda\\Desktop\\C-large.in"));
        PrintWriter P = new PrintWriter(new FileWriter("C:\\Users\\doda\\Desktop\\large.txt"));
        
        while (R.ready()) {
            int t = Integer.parseInt(R.readLine());
            for (int i = 0; i < t; ++i) {
                StringTokenizer s = new StringTokenizer(R.readLine());
                int out = 0;
                String O = "Case #" + (i + 1) + ":";
                int n = Integer.parseInt(s.nextToken());
                int m = Integer.parseInt(s.nextToken());
                for (int j = n; j <= m; ++j) {
                    int l[] = diffOrder(j);
                    for (int k = 0; k < l.length; ++k) {
                        if (l[k] > j && l[k] <= m) {
                            ++out;
                        }
                    }
                }
                O += " " + out;
                P.println(O);
            }
        }
        P.close();
    }

    public static int[] diffOrder(int num) {
        String s = "" + num;
        ArrayList<Integer> in = new ArrayList<Integer>();
        int re[];
        for (int i = 0; i < s.length() - 1; ++i) {
            s = s.charAt(s.length() - 1) + "" + s.substring(0, s.length() - 1);
            int y = Integer.parseInt(s);
            String h = "" + y;
            if (h.length() < s.length()) {
                y = 0;
            }
            if (!in.contains(y) && y != 0) {
                in.add(y);
            }
        }
        re = new int[in.size()];
        for (int i = 0; i < in.size(); ++i) {
            re[i] = in.get(i);
        }
        return re;
    }

}