docs: function sayIt(number, gender) {
  	var inWords;
  
  	switch (true) {
  		case number === 0:
  			inWords = 'нула';
  			break;
  		case number < 0:
  			inWords = 'минус ' + sayIt(-number, gender);
  			break;
  		default:
  			inWords = flatten(parse(Math.floor(number), gender || GENDER_NEITHER));
  	}
  
  	return inWords;
  }