#include<cstdio>
#include<iostream>
#include<string>

using namespace std;

int main(void){

	char tmp;
	int sum;
	string inp;
	string before(""),num(""),after("");
	
	while(scanf("%c",&tmp)!=EOF){
		if(tmp=='\n'){
			before+=inp;
			after=("");
			num=("");
			for(int i=0;i<before.length();i++){
				switch(before[i]){
					case' ':
						num+="101";
						break;
					case'\'':
						num+="000000";
						break;
					case',':
						num+="000011";
						break;
					case'-':
						num+="10010001";
						break;
					case'.':
						num+="010001";
						break;
					case'?':
						num+="000001";
						break;
					case'A':
						num+="100101";
						break;
					case'B':
						num+="10011010";
						break;
					case'C':
						num+="0101";
						break;
					case'D':
						num+="0001";
						break;
					case'E':
						num+="110";
						break;
					case'F':
						num+="01001";
						break;
					case'G':
						num+="10011011";
						break;
					case'H':
						num+="010000";
						break;
					case'I':
						num+="0111";
						break;
					case'J':
						num+="10011000";
						break;
					case'K':
						num+="0110";
						break;
					case'L':
						num+="00100";
						break;
					case'M':
						num+="10011001";
						break;
					case'N':
						num+="10011110";
						break;
					case'O':
						num+="00101";
						break;
					case'P':
						num+="111";
						break;
					case'Q':
						num+="10011111";
						break;
					case'R':
						num+="1000";
						break;
					case'S':
						num+="00110";
						break;
					case'T':
						num+="00111";
						break;
					case'U':
						num+="10011100";
						break;
					case'V':
						num+="10011101";
						break;
					case'W':
						num+="000010";
						break;
					case'X':
						num+="10010010";
						break;
					case'Y':
						num+="10010011";
						break;
					case'Z':
						num+="10010000";
						break;
				}
			}
			while(num.length()%5!=0){
				num+='0';
			}
			for(int i=0;i<num.length();i+=5){
				sum=(num[i]-'0')*16+(num[i+1]-'0')*8+(num[i+2]-'0')*4+(num[i+3]-'0')*2+(num[i+4]-'0')*1;
				switch(sum){
					case 0:
						after+='A';
						break;
					case 1:
						after+='B';
						break;
					case 2:
						after+='C';
						break;
					case 3:
						after+='D';
						break;
					case 4:
						after+='E';
						break;
					case 5:
						after+='F';
						break;
					case 6:
						after+='G';
						break;
					case 7:
						after+='H';
						break;
					case 8:
						after+='I';
						break;
					case 9:
						after+='J';
						break;
					case 10:
						after+='K';
						break;
					case 11:
						after+='L';
						break;
					case 12:
						after+='M';
						break;
					case 13:
						after+='N';
						break;
					case 14:
						after+='O';
						break;
					case 15:
						after+='P';
						break;
					case 16:
						after+='Q';
						break;
					case 17:
						after+='R';
						break;
					case 18:
						after+='S';
						break;
					case 19:
						after+='T';
						break;
					case 20:
						after+='U';
						break;
					case 21:
						after+='V';
						break;
					case 22:
						after+='W';
						break;
					case 23:
						after+='X';
						break;
					case 24:
						after+='Y';
						break;
					case 25:
						after+='Z';
						break;
					case 26:
						after+=' ';
						break;
					case 27:
						after+='.';
						break;
					case 28:
						after+=',';
						break;
					case 29:
						after+='-';
						break;
					case 30:
						after+='\'';
						break;
					case 31:
						after+='?';
						break;
				}
			}
			cout<<after<<endl;
			before=("");
		}
		else before+=tmp;
	}

	return 0;
}

Measured memory_bytes: 1216