code: func Singularize(word string) string {
  	if lingo.InStringSlice(word, unconvertable) {
  		return word
  	}
  
  	for _, cp := range singular {
  		if cp.pattern.MatchString(word) {
  			return cp.pattern.ReplaceAllString(word, cp.replacement)
  		}
  	}
  	return word
  }
docs: // Singularize singularizes words based on rules known