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.*;

/*
 * To change this template, choose Tools | Templates and open the template in
 * the editor.
 */
/**
 * Problem C. Recycled Numbers
 *
 * @author admin
 */
public class ProblemC_RecycledNumbers {

    public static void main(String[] args) throws FileNotFoundException, IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream("c:/C-large.in")));

        br.readLine();  // Ignore T

        StringBuilder sb = new StringBuilder();
        int row = 1;

        for (String line = br.readLine(); line != null; line = br.readLine()) {
            sb.append("Case #");
            sb.append(row);
            sb.append(": ");
            int ret = 0;
            String[] numbers = line.split(" ");
            int A = Integer.parseInt(numbers[0]);
            int B = Integer.parseInt(numbers[1]);
            
            for (int m = A+1; m <= B; m++) {
                for (int n = A; n < m; n++) {
                    if(recycled(n, m)) {
                        ret++;
                    }
                }
            }
            
            sb.append(ret);
//            System.out.println(ret);
            sb.append('\n');
            row++;
        }
        
        File file=new File("ProblemC_RecycledNumbers.out");
        DataOutputStream output=new DataOutputStream(new FileOutputStream(file));
        output.write(sb.toString().getBytes());
        output.close();

    }

    public static boolean recycled(int n, int m) {
        
        String strN = String.valueOf(n);
        String strM = String.valueOf(m);
        
        for(int i=1; i<strN.length(); i++) {
            String temp = strN.substring(i) + strN.substring(0, i);
            
            if(strM.equals(temp)) {
                return true;
            }
        }

        return false;
    }
}
