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.Scanner;

class RecycledNumbers {

    Scanner s = new Scanner(System.in);

    public static void main(String args[]) {
	    RecycledNumbers p = new RecycledNumbers();
	    p.run();
	}
	
	void run() {
	    int nCases = s.nextInt();
		for (int i=0; i<nCases; i++) {
		    int A = s.nextInt();
			int B = s.nextInt();
			System.out.println("Case #"+(i+1)+": "+count(A, B));
		}
	}

    int count(int A, int B) {
	    boolean[] dids = new boolean[B-A+1];
        int count = 0;
		int rotates = Integer.toString(A).length() - 1;
		int level = (int) Math.pow(10, rotates);

	    for (int i=A; i<B; i++) {
		    if (dids[i-A]) continue;
			int possibility = countPossibility(i, A, B, rotates, level, dids);
            if (possibility>1) count+=(possibility *(possibility-1)) / 2;			
		}
		return count;
	}

	int countPossibility(int v, int A, int B, int rotates, int level, boolean[] dids) {
	    int count = 1;
		dids[v-A] = true;
		
        for (int i=0; i<rotates; i++) {
		    int leftMost= v / level;
			v = (v % level) * 10 + leftMost;
			if (v<A || v>B) continue;
			if (dids[v-A]) continue;
			dids[v-A] = true;
			count++;
		}
    	return count;
	}
}