def encode1(str)
  encodetable1 = {
    ' ' => '101',
    '\'' => '000000',
    ',' => '000011',
    '-' => '10010001',
    '.' => '010001',
    '?' => '000001',
    'A' => '100101',
    'B' => '10011010',
    'C' => '0101',
    'D' => '0001',
    'E' => '110',
    'F' => '01001',
    'G' => '10011011',
    'H' => '010000',
    'I' => '0111',
    'J' => '10011000',
    'K' => '0110',
    'L' => '00100',
    'M' => '10011001',
    'N' => '10011110',
    'O' => '00101',
    'P' => '111',
    'Q' => '10011111',
    'R' => '1000',
    'S' => '00110',
    'T' => '00111',
    'U' => '10011100',
    'V' => '10011101',
    'W' => '000010',
    'X' => '10010010',
    'Y' => '10010011',
    'Z' => '10010000'
  }
  encoded = String.new
  str.each_char{|c| encoded += encodetable1[c] }
  while encoded.size % 5 != 0
    encoded += "0"
  end
  return encoded
end

def encode2(str)
  encodetable2 = {
    '00000' => 'A',
    '00001' => 'B',
    '00010' => 'C',
    '00011' => 'D',
    '00100' => 'E',
    '00101' => 'F',
    '00110' => 'G',
    '00111' => 'H',
    '01000' => 'I',
    '01001' => 'J',
    '01010' => 'K',
    '01011' => 'L',
    '01100' => 'M',
    '01101' => 'N',
    '01110' => 'O',
    '01111' => 'P',
    '10000' => 'Q',
    '10001' => 'R',
    '10010' => 'S',
    '10011' => 'T',
    '10100' => 'U',
    '10101' => 'V',
    '10110' => 'W',
    '10111' => 'X',
    '11000' => 'Y',
    '11001' => 'Z',
    '11010' => ' ',
    '11011' => '.',
    '11100' => ',',
    '11101' => '-',
    '11110' => '\'',
    '11111' => '?'
  }
  encoded = String.new
  source = encode1(str)
  while source.empty? == false
    encoded += encodetable2[source.slice!(0,5)]
  end
  return encoded
end

while input = $stdin.gets.chomp
  puts encode2(input)
end