def is_isogram(word):

return True

if __name__ == '__main__':

print(is_isogram("")) # True

print(is_isogram("isogram")) # True

print(is_isogram("eleven")) # False

print(is_isogram("subdermatoglyphic")) # True

print(is_isogram("Alphabet")) # False

print(is_isogram("thumbscrew-japingly")) # True

print(is_isogram("Hjelmqvist-Gryb-Zock-Pfund-Wax")) # True

print(is_isogram("Emily Jung Schwartzkopf")) # True

print(is_isogram("accentor")) # False