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.FileInputStream;
import java.io.FileWriter;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

import com.ibm.db2.jcc.am.s;


public class C {
    private static final String INPUT_FILE = "d:/C-large(1).in";
    private static final String OUTPUT_FILE = "d:/result.out";
    private static final int MAX_VALUE = 2000000;
    private static int T;
    static int[] d = new int[1 + MAX_VALUE];
    static int a, b;
    static long[] result;
    
    static void init() {
        for (int i = 1; i <= MAX_VALUE; ++i) {
            if (d[i] != 0) {
                continue;
            }
            d[i] = i;
            String s = "" + i;
            for (int j = 0; j < s.length(); ++j) {
                s = s.substring(1) + s.charAt(0);
                if (s.charAt(0) != '0') {
                    int v = Integer.parseInt(s);
                    if (v > MAX_VALUE) continue;
                    d[Integer.parseInt(s)] = i;
                }
            }
        }
    }
    
    static void Input() throws Exception {
        InputStream in = new FileInputStream(INPUT_FILE);
//        InputStream in = System.in;
        Scanner scanner = new Scanner(in);
        T = scanner.nextInt();
        result = new long[T + 1];

        for (int i = 0; i < T; ++i) {
            a = scanner.nextInt();
            b = scanner.nextInt();
            solve(i, a, b);
        }
    }
    
    static void solve(int c, int a, int b) {
        long rst = 0;
        int[] map = new int[MAX_VALUE + 1];
        for (int i = a; i <= b; ++i) {
            ++map[d[i]];
        }
        for (int i = a; i <= b; ++i) {
            if (map[d[i]] > 0) {
                int v = map[d[i]];
                rst += 1L * v * (v - 1) / 2;
                map[d[i]] = 0;
            }
        }
        result[c] = rst;
    }
    
    static void Output() throws Exception {
        FileWriter writer = new FileWriter(new File(OUTPUT_FILE));
        for (int i = 0; i < T; ++i) {
            String rs = "Case #" + (i + 1) + ": " + (result[i]) + "\n";
            writer.write(rs);
            System.out.println(rs);
        }
        writer.close();
    }
    
    /**
     * @param args
     */
    public static void main(String[] args) throws Exception {
        long start = System.currentTimeMillis();
        init();
//        System.out.println(System.currentTimeMillis() - start);
        Input();
        Output();
    }
}
