#!/usr/bin/python
# -*- coding: UTF-8 -*-

def I0(file, txt=""):
    file.write(txt + "\n")

def I1(file, txt=""):
    file.write("\t" + txt + "\n")

def I2(file, txt=""):
    file.write("\t\t" + txt + "\n")

def I3(file, txt=""):
    file.write("\t\t\t" + txt + "\n")

def I4(file, txt=""):
    file.write("\t\t\t\t" + txt + "\n")