#!/usr/bin/env python
#encoding: UTF-8
#Author:Skate
#http://blog.csdn.net/wyzxg/article/details/40114001
#http://my.oschina.net/oncereply/blog/260755
ipdizhi = '221.235.254.91'

def ip2num(ip):
    ip=[int(x) for x in ip.split('.')]
    return ip[0] <<24 | ip[1]<<16 | ip[2]<<8 |ip[3]
def num2ip(num):
    return '%s.%s.%s.%s' %( (num & 0xff000000) >>24,
                            (num & 0x00ff0000) >>16,
                            (num & 0x0000ff00) >>8,
                            num & 0x000000ff )
def get_ip(ip):
    start,end = [ip2num(x) for x in ip.split('-') ]
    return [ num2ip(num) for num in range(start,end+1) if num & 0xff ]
if __name__ == '__main__':
   iplist=get_ip('221.235.254.91-221.235.254.92')
   for i in iplist:
       print i+'a'