# coding:utf-8
#JSRUN引擎2.0,支持多达30种语言在线运行,全仿真在线交互输入输出。
member=['唐七','赵六','王五','李四','张三']
i = 1
while(i<11):
n=1
a = input('输入元素')
member.insert(i,a)
i = i+2
n = n+1
for each in range(len(member)):
if each%2 == 0:
print(member[each],member[each+1])
t = 0
count = 0
length = len(member)
while count < length:
print(member[count],member[count+1])
count +=2