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.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;


	public class Main_c_new {
		public static void main(String[] args) throws Exception{
			BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
			int cases=Integer.parseInt(in.readLine());
			
			for(int i=1;i<=cases;i++)
			{
				int count = 0;
				String line = in.readLine();
				String parts[] = line.split(" ");
				int a = Integer.parseInt(parts[0]);
				int b = Integer.parseInt(parts[1]);
				int startlen = 0;
				int temp1 = a; 
				for(int k=0;k<8;k++){
					startlen++;
					temp1/=10;
					if(temp1<=0){
						break;
					}
				}
				//System.out.println("there");
				for(int j=a;j<b;j++){
					//int temp = j;
					int length = 0;
					if( j == (int)(Math.pow(10, startlen)) ){
						startlen++;
					}
					length = startlen;
					ArrayList<Integer> list = new ArrayList<Integer>();
					for(int k=1;k<length;k++){
						 Integer temp = j;
						 String val = Integer.toBinaryString(j);
						int div = (int)Math.pow(10,k);
						int part1 = j/div;
						int part2 = j%div;
						if(part2 >= (int)(Math.pow(10, k-1))){
							int num = (part2*((int)Math.pow(10, length-k)))+part1;
							if(num>j && num<=b){
								int flag = 0;
								for(int l=0; l<list.size();l++){
									if(list.get(l) == num){
										flag = 1;
									}
								}
								
								if(flag == 0){
								count++;
								list.add(num);
								}
							}
						}
					}
						
					}

				System.out.println("Case #"+i+": "+count);
			}
		}
	}
