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

import sys
import codecs

#tags = ('S', 'B', 'B2', 'B3', 'M', 'E')

def process_word(word):
    l = len(word)

    if l == 1:
        print word.encode('UTF-8'), 'S'
        return
 
    for i in xrange (0, l-1):
        c = word[i].encode('UTF-8')
        if i == 0:
            print c, 'B'
        elif i == 1:
            print c, 'B2'
        elif i == 2:
            print c, 'B3'
        else:
            print c, 'M'
 
    print word[l-1].encode('UTF-8'), 'E'

def process_file(file):
    for line in file:
        for word in line.strip().split():
            process_word(word)
    
        print

if __name__ == "__main__":
    try:
        file = codecs.open(sys.argv[1], "r", "utf-8")
    except:
        print "corpus file is not specified, or open failed!"
        sys.exit()
    
    process_file(file)
    file.close()