# 按顺序打印输出字符串内所有字符（其二：错误） 

s = 'ABCDEFG'

print('s[-8] = ', s[-8])    # 错误
print('s[-7] = ', s[-7])
print('s[-6] = ', s[-6])
print('s[-5] = ', s[-5])
print('s[-4] = ', s[-4])
print('s[-3] = ', s[-3])
print('s[-2] = ', s[-2])
print('s[-1] = ', s[-1])
