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.DataInputStream;
import java.io.EOFException;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.util.HashSet;


public class shift {

	/**
	 * @param args
	 */
	public static void main(String[] args) {

		
		try{
			FileInputStream infile = new FileInputStream("in");
			DataInputStream datain = new DataInputStream(infile);
			//Reader reader = new InputStreamReader(new FileInputStream(infile));
			FileWriter writer = new FileWriter("out", false);
			String s = datain.readLine();
			Integer k = new Integer(s);
			
			for (int i=1;i<=k;i++){
				s = datain.readLine();
				String [] ABstring = s.split(" ");
				Integer A = new Integer(ABstring[0]);
				Integer B = new Integer(ABstring[1]);				
				int numShift = ABstring[0].length()-1;
				int numRecycledNum = 0;

				for (int n=A;n<B;n++)
				{
					HashSet<String> nSet = new HashSet<String>();
					int roundShift = 1;
					String stringN = Integer.toString(n);
					stringN = stringN.substring(1) + stringN.charAt(0);
					//nSet.add(stringN);
					
					while (roundShift<=numShift){
						Integer shiftedNum = new Integer(stringN);

						if (n<shiftedNum && shiftedNum<=B && !nSet.contains(stringN)){
							nSet.add(stringN);
							numRecycledNum++;
							//System.out.println(numRecycledNum+": "+n+","+shiftedNum);
						}
						roundShift++;
						stringN = stringN.substring(1) + stringN.charAt(0);
					}
					
				}
				
				writer.append("Case #"+i+": "+numRecycledNum+"\n");
				
				
				
			}
			infile.close();
			datain.close();
			writer.close();
			
			
/*			System.out.print(i);
			writer.append("Case #1"+": ");
			int k = 2;
			while(datain.available()!=0){
				char c = (char) datain.readByte();
				if (c=='\n' && k<=i){
					writer.append('\n');
					writer.append("Case #"+k+": ");
					k++;
				}else{
					char d = mapChar(c);
					writer.append(d);
					//System.out.print(d);
				}
			}
//			writer.flush();
			infile.close();
			datain.close();
			writer.close();
*/			
			
		}catch(EOFException e){

		}catch (Exception e) {
			//infile.close();
            e.printStackTrace();
        }

	}

}
