#include <bits/stdc++.h>
using namespace std;
string s,ans = "",ans2 = "";

int main()
{
	int a = 0,sum = 0,sum2 = 0;
	getline(cin,s);
	for(int i = 0;i < s.size();i ++){
		ans += s[i],ans2 += s[i];
		if(s[i] == ',' || s[i] == ' '){
			if(a > sum) sum = a,a = 0,ans = "";
			else a = 0,ans = "";
			if(a < sum2) sum2 = a,a = 0,ans2 = "";
			else a = 0,ans2 = ""; 
		}
		if(s[i] == '.') break;
		a ++;
	}
	cout << ans << "\n" << ans2;
	return 0;
}