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.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class C {
    static final int MAX_N = 2000000;
    static int[][] precalc;
    static {
        precalc = new int[MAX_N + 1][];
        List<Integer> values = new ArrayList<Integer>();
        for (int i = 1, deg = 1; i <= MAX_N; ++i) {
            if (i == deg * 10) {
                deg *= 10;
            }
            values.clear();
            int curr = (i % 10) * deg + (i / 10);
            while (curr != i) {
                if (curr > i) {
                    values.add(curr);
                }
                curr = (curr % 10) * deg + (curr / 10);
            }
            int[] z = new int[values.size()];
            for (int j = 0; j < z.length; ++j) {
                z[j] = values.get(j);
            }
            precalc[i] = z;
        }
    }

    public void run(Scanner in, PrintWriter out, int nCase) {
        int min = in.nextInt();
        int max = in.nextInt();
        int count = 0;
        for (int i = min; i <= max; ++i) {
            for (int j : precalc[i]) {
                if (j <= max) {
                    ++count;
                }
            }
        }
        out.printf("Case #%d: %d%n", nCase, count);
    }

    public static void main(String[] args) throws FileNotFoundException {
        String filename = C.class.getSimpleName().toLowerCase();

        Scanner in = new Scanner(new File(filename + ".in"));
        PrintWriter out = new PrintWriter(filename + ".out");

        int nCases = in.nextInt();

        for (int i = 1; i <= nCases; ++i) {
            new C().run(in, out, i);
        }

        out.close();
        in.close();
    }
}
