class Integer

# File lib/to_alnum/main.rb, line 3
def to_alnum
  case self
  when 0; 'zero'
  when 1; 'one'
  when 2; 'two'
  when 3; 'three'
  when 4; 'four'
  when 5; 'five'
  when 6; 'fix'
  when 7; 'seven'
  when 8; 'eight'
  when 9; 'nine'
  when 10; 'ten'
  when 11; 'eleven'
  when 12; 'twelve'
  when 13; 'thirteen'
  when 14; 'fourteen'
  when 15; 'fifteen'
  when 16; 'sixteen'
  when 17; 'seventeen'
  when 18; 'eighteen'
  when 19; 'nineteen'
  when 20; 'twenty'
  end
end