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.PrintStream;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.ListIterator;
import java.util.Scanner;

public class RecycledNumbers {

	/**
	 * @param args
	 * @throws FileNotFoundException
	 */
	public static void main(String[] args) throws FileNotFoundException {
		// TODO Auto-generated method stub
		//System.setOut(new PrintStream(new File("RecycledNumbers.txt")));
	
		Scanner scanner = new Scanner(System.in);
		int testcasenum = Integer.valueOf(scanner.next());
		scanner.nextLine();
		for (int testcase = 0; testcase < testcasenum; testcase++) {
			System.out.print("Case #");
			System.out.print(testcase+1);
			System.out.print(": ");
			int from = scanner.nextInt();
			int to = scanner.nextInt();
			int count = 0;
			boolean table[] = new boolean[to+1];
			for (int num = from; num <= to; num++) {
				if (!table[num]){
					int len = String.valueOf(num).length();
			
					int shift = num;
					table[num] = true;
					int pair = 1;
					for (int i = 0;i < len-1;i++){
						shift = shiftLeft(shift, len);
						if (shift >= from && shift <= to&& !table[shift]){
							pair++;
							table[shift] = true;
							
						}
					}
					count += pair*(pair-1)/2;
				}
			}
			System.out.println(count);

		}
	}


	public static int shiftLeft(int num, int len) {
		int digit = num % 10;
		num = num / 10;
		return num += Math.pow(10, len-1)*digit;	
	}
	
	
	public static int getUniqueDigits(int num){
		boolean digits[] = new boolean[10];
		while (num != 0) {
			int digit = (num % 10);
			digits[digit] = true;
			num = num / 10;
		}
		int count = 0;
		for (int i = 0;i < 10;i++){
			count += digits[i]?1:0;
		}
		return count;
	}
	

}
