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 com.sun.org.apache.bcel.internal.generic.AALOAD;

import java.io.IOException;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

public class RecycledNum extends JamProblem {
    public static void main(String[] args) throws IOException {
        RecycledNum p = new RecycledNum();
        p.go();
    }

    @Override
    String solveCase(JamCase jamCase) {
        RecNCase ca = (RecNCase) jamCase;
        int res = 0;
        for (int n = ca.A; n < ca.B; n++) {
            String m = "";
            //print("n "+n);
            Set<Integer> bag = new HashSet<>();
            int length = intLength(n);
            for (int t = 1; t < length; t++) {
                int pow = (int) Math.pow(10, t);
                int pow2 = (int) Math.pow(10,length-t);
                int f = (n / pow);
                int s = n - (pow * f);
                int cand = f + (pow2 * s);
                //print("m " + cand);
                if (cand < ca.A || cand > ca.B || cand <= n) {
                    continue;
                }
                if (bag.contains(cand)) {
                    continue;
                }
                if (intLength(cand) != intLength(n)) {
                    continue;
                }
                res++;
                bag.add(cand);
                //print(""+ n+ " " + cand);
            }
        }
        return "" + res;
    }

    private void print(String m) {
        System.out.println(m);
    }

    private int intLength(int n) {
        return Integer.toString(n).length();
    }

    @Override
    JamCase parseCase(List<String> file, int line) {
        RecNCase ca = new RecNCase();
        ca.lineCount = 1;
        String s = file.get(line);
        int[] ints = JamUtil.parseIntList(s, 2);
        ca.A = ints[0];
        ca.B = ints[1];
        return ca;
    }
}

class RecNCase extends JamCase {
    int A, B;
}
