map1 = {
' ' => '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',
}
map2 = {
'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' => '?',
}

s = readlines.map(&:chomp).join(" ")
s = s.chars.map{|c| map1[c]}.join
s += "0" * (5 - s.size % 5)
puts s.scan(/.{5}/).map{|c| map2[c] }.join