words = '''あいう'12"3456'''
print("半角の文字は以下です")
for elem in words:
if len(elem.encode('utf-8')) == 1:
print(elem)
d29yZHMgPSAnJyfjgYLjgYTjgYYnMe+8kiLvvJM077yV77yWJycnCgpwcmludCgi5Y2K6KeS44Gu5paH5a2X44Gv5Lul5LiL44Gn44GZIikKZm9yIGVsZW0gaW4gd29yZHM6CiAgICBpZiBsZW4oZWxlbS5lbmNvZGUoJ3V0Zi04JykpID09IDE6CiAgICAgICAgcHJpbnQoZWxlbSkK