#include <iostream>
#include <string>

using namespace std;

char c1[32] = {' ','\'',',','-','.','?','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'};
string s1[32] = {"101", "000000","000011","10010001","010001","000001","100101","10011010",
				 "0101","0001","110","01001","10011011","010000","0111","10011000",
				 "0110","00100","10011001","10011110","00101","111","10011111","1000",
				 "00110","00111","10011100","10011101","000010","10010010","10010011","10010000"};

string s2[32] = {"00000", "00001", "00010", "00011", "00100", "00101", "00110", "00111", 
				 "01000", "01001", "01010", "01011", "01100", "01101", "01110", "01111", 
				 "10000", "10001", "10010", "10011", "10100", "10101", "10110", "10111", 
				 "11000", "11001", "11010", "11011", "11100", "11101", "11110", "11111"};
char c2[32] = {'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z', ' ', '.',',','-','\'','?'};

void solve()
{
	string s;
	while(getline(cin, s))
	{
		string binary;
		for(int i = 0; i < s.size(); ++i)
		{
			for(int j = 0; j < 32; ++j)
			{
				if(s[i] == c1[j])
				{
					binary += s1[j];
				}
			}
		}
		while(binary.size() % 5)
		{
			binary += '0';
		}
		
		string ans;
		for(int i = 0; i < binary.size(); i += 5)
		{
			string temp;
			for(int j = 0; j < 5; ++j)
			{
				temp += binary[i + j];
			}
			for(int j = 0; j < 32; ++j)
			{
				if(temp == s2[j])
				{
					ans += c2[j];
				}
			}
		}
		cout << ans << endl;
	}
}

int main()
{
	solve();
	return(0);
}