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);
		}

	}
}

package code_jam_quali;

import java.util.HashSet;
import java.util.Scanner;

/**
 *
 * @author sansarun
 */
public class Recycled {

    public static void main(String[] args) {        
        Scanner sc = new Scanner(System.in);
        int caseNumber = sc.nextInt();

        for(int currentCase=1; currentCase<=caseNumber; currentCase++) {
            HashSet<NumberPair> recycledPairSet = new HashSet<NumberPair>();
            int a = sc.nextInt();
            int b = sc.nextInt();
            int digit = (""+a).length();

            for(int n=a; n<b; n++) {
                StringBuilder nString = new StringBuilder(""+n);

                for(int j=0; j<digit; j++) {
                    rotate(nString);
                    int m = Integer.valueOf(nString.toString());
                    
                    if(m > n && m <= b) {
                        recycledPairSet.add(new NumberPair(n, m));
                    }
                }
            }           

            System.out.println(String.format("Case #%d: %d", currentCase, recycledPairSet.size()));
        }    

    }

    private static StringBuilder rotate(StringBuilder s) {
        if(s.length() == 0)
            return s;

        s.insert(0, s.charAt(s.length() - 1));
        s.deleteCharAt(s.length() - 1);
        return s;
    }
}

class NumberPair {

    private int a;
    private int b;

    public NumberPair(int a, int b) {
        this.a = a;
        this.b = b;
    }

    @Override
    public boolean equals(Object obj) {
        if (!(obj instanceof NumberPair)) {
            return false;
        }

        NumberPair n = (NumberPair) obj;
        if (n.a == a && n.b == b) {
            return true;
        } else if (n.a == b && n.b == a) {
            return true;
        } else {
            return false;
        }
    }

    @Override
    public int hashCode() {
        return a+b;
    }
}
