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.*;

public class Main{
    public static void main(String[] args){
	Scanner sc = new Scanner(System.in);

	int T = sc.nextInt();
	int caseNum = 0;

	while(caseNum++<T){

	    int A = sc.nextInt();
	    int B = sc.nextInt();

	    int ans = 0;
	    for(int i=A; i<B; i++){
		for(int j=i+1; j<=B; j++){
		    String n = Integer.toString(i);
		    String m = Integer.toString(j);
		    int nlen = n.length();
		    for(int k=0; k<nlen; k++){
			n = n.substring(nlen-1,nlen)+n.substring(0,nlen-1);
			if(n.equals(m)){
			    ans++; break;
			}
		    }
		}
	    }

	    System.out.println("Case #"+caseNum+": "+ans);
	}
    }
}