#include <bits/stdc++.h>
using namespace std;
string s;
int a[205],maxx = -1,maxi,minn = 105,mini;
int longth;
int main()
{
	getline(cin,s);
	for (int i = 0;i < s.length();i++)
	{
		if (s[i] != ' ' && s[i] != ',' && s[i] != '.')
		{
			longth++;
		}
		else
		{
			longth = 0;
		}
		if (longth > maxx)
		{
			maxx = longth;
			maxi = i;
		}
		if (longth != 0)
		{
			if (longth < minn)
			{
				minn = longth;
				mini = i;
			}
		}
	}
	for (int i = maxi - maxx + 1;i <= maxi;i++)
	{
		cout << s[i];
	}
	cout << endl;
	for (int i = mini - minn + 1;i <= mini;i++)
	{
		cout << s[i];
	}
	return 0;
}