#include<bits/stdc++.h>
using namespace std;

map<string,string> board;
map<string,string> word;
 
void config(){
  string w = "ABCDEFGHIJKLMNOPQRSTUVWXYZ .,-'?";
  string s = "00000";
  string h[] = {"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",
		"101","010001","000011","10010001","000000","000001"};
  for(int i=0;i<w.size();i++){
    string tmp = "";
    tmp += w[i];
    board[s] = tmp;
    word[tmp] = h[i];
    /*
      cout << tmp << " " << s << endl;
      cout << h[i] << " " << w[i] << endl << endl;
    */
    if(s[4] == '0') s[4] = '1';
    else {
      for(int j=4;j>=0;j--){
	if(s[j] == '0'){
	  s[j] = '1';
	  break;
	}
	else s[j] = '0';
      }
    }
  }
}

int main(){
  config();
  string str;
  while(getline(cin,str)){
    string next = "";
    for(int i=0;i<str.size();i++){
      string tmp = "";
      tmp += str[i];
      next += word[tmp];
    }
    while(next.size() % 5){
      next += "0";
    }
    string ans = "";
    string now = "";
    for(int i=0;i<next.size();i++){
      now += next[i];
      if(now.size() == 5){
	ans += board[now];
	now = "";
      }
    }
    cout << ans << endl;
  }
}