import java.io.*;

class code1
{
	public static void main(String args[]) throws Exception 
	{
		File ii = new File ("C-small-attempt1.in");
		FileInputStream fis = new FileInputStream(ii);
		BufferedReader  br = new BufferedReader(new InputStreamReader (fis));
		int cases = Integer.parseInt(br.readLine());
		FileOutputStream fout = new FileOutputStream ("output.txt");
		DataOutputStream dout = new DataOutputStream (fout);
		int total=0;
		for(int i=0;i<cases;i++){
		String temp = br.readLine();
		String parts [] = temp.split(" ");
		int lower = Integer.parseInt(parts[0]);
		int upper = Integer.parseInt(parts[1]);
		System.out.println(lower+" "+upper);
		
		for(int j=lower;j<=upper;j++)
		{
			int abc = j;int length=0;
			if(j<10)continue;
			while (abc!=0){abc/=10;length++;}
			abc=j;
			for(int m=0;m<length-1;m++){
				int shift = abc%10;
				abc=abc/10;
				System.out.println("hi "+j);
				abc=abc+shift*power(10,length-1);
				if(abc<=upper&&shift!=0&&abc>j)total++;
				System.out.println(total);
			}
		}
 		dout.writeBytes("Case #"+(i+1)+ ": "+total+"\n");
 		total=0;
		}//for close
		
	}

	private static int power(int i, int j) {
		int no=1;
		for(int a=0;a<j;a++){no=10*no;}
		return no;
	}
}
import java.util.Scanner;
import java.util.TreeMap;


public class RecycledNumbers {
	public static void main(String[]args){
		Scanner sc = new Scanner(System.in);
		//Read in the T int -- Test Cases
		int T = Integer.parseInt(sc.nextLine());
		for (int t = 1; t <= T; t++) {
			int num = 0;
			//START OF CODE
			int a = sc.nextInt();
			int b = sc.nextInt();
			int focus = a;
			
			for (int i = 0; focus < b; i++) {
				String f = focus + "";
				boolean distinct = true;
				/*all:for (int j = 0; j < f.length(); j++) {
					for (int j2 = j+1; j2 < f.length(); j2++) {
						if(f.charAt(j) == f.charAt(j2)){
							distinct = false;
							break all;
						}
					}
				}
				distinct = true;*/
				if(distinct){
					for (int j = 0; j < f.length() - 1; j++) {
						f = f.charAt(f.length()-1) + f.substring(0,f.length()-1);
						int fs = Integer.parseInt(f);
						if(fs <= b && f.charAt(0) != '0' && fs > focus){
							//System.out.println(focus+ " "+ f);
							num++;
						}
					}	
				}
				
				focus++;
			}
			//END OF CODE
			//OUTPUT
			System.out.format("Case #%d: %d\n", t, num);
		}
	}
}
