import java.util.Scanner;

class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int t=sc.nextInt();
		int casos=1, a, b, n, m, cont;
		while(t!=0){
			a=sc.nextInt();
			b=sc.nextInt();
			if(a>b){
				int aux=a;
				a=b;
				b=aux;
			}
			System.out.printf("Case #%d: ",casos++);
			if(a==b){
				System.out.printf("%d\n",0);
			}else{
				cont=0;
				for(n=a;n<b;n++){					
					for(m=n+1;m<=b;m++){					
						if(isRecycled(n,m)) cont++;
					}
				}
				System.out.printf("%d\n",cont);
			}
			t--;
		}		
	}
	public static boolean isRecycled(int n1, int n2){
		String s1, s2, aux;
		s1 =  String.valueOf( n1 );
		s2 =  String.valueOf( n2 );		
		boolean r = false;		
		for(int i=0;i<s1.length();i++){
			aux="";
			aux=s1.substring(i,s1.length())+s1.substring(0,i);
//			System.out.println(aux);
			if(aux.equals(s2)){
				r=true;
				break;
			}
		}		
		return r;
	}
}

import java.util.HashSet;
import java.util.Scanner;


public class C {
    public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        
        int cases;
        cases = in.nextInt();
        in.nextLine();
        
        for(int i = 0; i < cases; i ++ ) {
            int a = in.nextInt();
            int b = in.nextInt();
            HashSet<Integer> found = new HashSet<Integer>();
            int total = 0;
            if( b >= 10) {
                if( a < 10 ) {
                    a = 10;
                }
                for( int j = a; j <= b; j++ ) {
                    if( !found.contains(j) ) {
                        String theNum = String.valueOf(j);
                        int morphed;
                        theNum = theNum.charAt(theNum.length() -1) + theNum.substring(0, theNum.length()-1);
                        morphed = Integer.valueOf(theNum);
                        while( morphed != j ) {
                            if( !found.contains(morphed) &&
                                    morphed >=a && morphed <=b ) {
                                total ++;
                                found.add(j);
                            }
                            theNum = theNum.charAt(theNum.length() -1) + theNum.substring(0, theNum.length()-1);
                            morphed = Integer.valueOf(theNum);
                        }
                    }
                }
            }
            System.out.println("Case #" + (i+1) + ": " + total );
        }
    }
}
