import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

import java.util.ArrayList;
import java.util.HashSet;


public class ProbC {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		ArrayList<String> in=Utils.readFile("C-small-attempt0.in.in");
		ArrayList<String> out =new ArrayList<String>();
		//int[][] matrix=new int[100000][100000];
		for (int i = 1; i < in.size(); i++) {
			String[] str=in.get(i).split(" ");
			int A= Integer.parseInt(str[0]);
			int B= Integer.parseInt(str[1]);
			int numA=numDigit(A);
			int count=0;
			HashSet<Integer> checkDup=new HashSet<Integer>();
			for(int j=A;j<=B;j++){
				for(int pos=1;pos<numA;pos++){
					int recycle=rotate(j,pos);
					//System.out.println(i+": "+j+ " vs "+recycle);
					if(recycle<=B&&j<recycle){
						if(!checkDup.contains(recycle)){
							count++;//System.out.println("**************"+j+"<=>"+recycle);
							checkDup.add(new Integer(recycle));
						}		
						//System.out.println(i+": "+j +" vs "+recycle+"**********");	
					}
				}
				checkDup.clear();
			}
			System.out.println("Case #"+i+": "+ count);
			
			
			
		}
//		for(int i=1000;i<1200;i++){
//			System.out.println(i+"=>"+rotate(i,4));
//		}

	}

	private static int myExp(int e){
		if(e==1)
			return 1;
		if(e==2)
			return 10;
		if(e==3)
			return 100;
		if(e==4)
			return 1000;
		if(e==5)
			return 10000;
		if(e==6)
			return 100000;
		//if(e==7)
		return 1000000;
		
	}
	private static int rotate(int A,int pos) {
		int num=numDigit(A);
		if(pos==1)
			return (A%10)*myExp(num-pos+1)+A/10;
		if(pos==2)
			return (A%100)*myExp(num-pos+1)+A/100;
		if(pos==3)
			return (A%1000)*myExp(num-pos+1)+A/1000;
		if(pos==4)
			return (A%10000)*myExp(num-pos+1)+A/10000;
		if(pos==5)
			return (A%100000)*myExp(num-pos+1)+A/100000;
		if(pos==6)
			return (A%1000000)*myExp(num-pos+1)+A/1000000;
		//if(pos==7)
		return (A%10000000)*myExp(num-pos+1)+A/10000000;
	}
	private static int numDigit(int A) {
		if(A/1000000>0)
		return 7;
		if(A/100000>0)
			return 6;
		if(A/10000>0)
			return 5;
		if(A/1000>0)
			return 4;
		if(A/100>0)
			return 3;
		if(A/10>0)
			return 2;
		return 1;
	}

}
