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 template;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.util.ArrayList;

public class TestCaseIO {

    public static ArrayList<TestCase> loadFromFile(String infile) {
        //inc checks on #lines, length of splits, etc.
        BufferedReader br = Utils.newBufferedReader(infile);
        ArrayList<TestCase> tcList = new ArrayList<>();

        //first line is N, the number of test cases
        Integer N = Utils.readInteger(br);

        //cycle through N test cases
        for (int x = 0; x < N; x++) {
            TestCase tc = new TestCase();
            tc.setRef(x + 1);

            ///////////////////////////////////////////////////////////
            //load properties - the bit to customise per problem
            ArrayList<Integer> l = Utils.readIntegerList(br, 2);
            tc.setIntegerList("a_b", l);

            ///////////////////////////////////////////////////////////

            tcList.add(tc);
        }

        //confirm end of file
        if (Utils.readLn(br) != null) {
            Utils.die("Unexpected text at end of infile");
        }

        return tcList;
    }

    public static ArrayList<TestCase> mockUp() {

        ArrayList<TestCase> tcList = new ArrayList<>();
        for (int i = 0; i < 10; i++) {
            TestCase tc = new TestCase();
            tc.setRef(i);
            
            int[] xs = Utils.randomIntegerArray(100, -50, 50, i * 2);
            int[] ys = Utils.randomIntegerArray(100, -50, 50, i * 2 + 1);
            tc.setIntegerList("xs", Utils.arrayToArrayList(xs));
            tc.setIntegerList("ys", Utils.arrayToArrayList(ys));

            tcList.add(tc);
        }
        return tcList;
    }

    public static void writeSolutions(ArrayList<TestCase> tcList, String outfile) {

        BufferedWriter bw = Utils.newBufferedWriter(outfile, false);

        for (int i = 0; i < tcList.size(); i++) {
            TestCase tc = tcList.get(i);
            Object solution = tc.getSolution();
            String line = "Case #" + (i + 1) + ": " + solution.toString();
            Utils.writeLn(bw, line);
        }

        Utils.closeBw(bw);

    }
}
