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.FileReader;
import java.io.LineNumberReader;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class go3 {

    public static final String IN_FILE = "C-large.in";
    public static final String OUT_FILE = "out.txt";


    public static void main(String[] args) throws Throwable {

        try (LineNumberReader reader = new LineNumberReader(new FileReader(IN_FILE))) {
            try (PrintWriter writer = new PrintWriter(OUT_FILE)) {

                int T = Integer.parseInt(reader.readLine());

                //Tests
                for (int t = 1; t <= T; t++) {

                    Scanner scanner = new Scanner(reader.readLine());
                    int LOW = scanner.nextInt();
                    int HIGH = scanner.nextInt();

                    HashSet<Pair> pairs = new HashSet<>();

                    for(int i = LOW; i <= HIGH ; i++) {

                        Set<Integer> set = validPermutations(i,LOW,HIGH);
                        Integer[] permutations = set.toArray(new Integer[0]);
                        Arrays.sort(permutations);

                        for(int n = 0; n < permutations.length ; n++){
                            for(int m = n+1; m < permutations.length; m++) {
                                pairs.add(new Pair(permutations[n],permutations[m]));
                            }
                        }
                    }
                    writer.printf("Case #%d: %s\n", t, pairs.size());
                }
            }
        }

    }

    public static Set<Integer> validPermutations (Integer n,int LOW, int HIGH){
        int lastIndex = n.toString().length() - 1;
        StringBuilder b = new StringBuilder(n.toString());
        Set<Integer> result = new HashSet<>();

        result.add(Integer.parseInt(b.toString()));

        for(int i = 1 ; i <= lastIndex; i++){

            char c = b.charAt(lastIndex);
            if (c == '0') continue;

            b = b.deleteCharAt(lastIndex).insert(0,c);

            int k = Integer.parseInt(b.toString());

            if(k >= LOW && k <= HIGH){
                result.add(k);
            }
        }

        return result;
    }
}

class Pair {
    int n;
    int m;

    Pair(int n, int m) {
        this.n = n;
        this.m = m;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        Pair pair = (Pair) o;

        if (m != pair.m) return false;
        if (n != pair.n) return false;

        return true;
    }

    @Override
    public int hashCode() {
        int result = n;
        result = 31 * result + m;
        return result;
    }

    @Override
    public String toString() {
        return "(" + n + "," + m + ")";
    }
}